Study: How much are Premier League sides overspending on homegrown talent?

After Manchester United’s failed summer pursuit of England International Jadon Sancho, BettingOdds.com have conducted a study into how much Premier League sides overspend on British talent in comparison to their value.

The object of the study was to find out which Premier League sides since the beginning of the 2015/16 season have got the best value when it comes to signing homegrown players.

All player values listed are those determined by Transfermarkt.com and it’s important to note that all values listed in the study are from the time the transfer took place and are not player's current values unless they’ve been purchased in the 2020/21 summer transfer window.

As well as this, we have discovered how much Premier League sides spend on homegrown talent in comparison to the remainder of the top five leagues in Europe (La Liga, Serie A, Bundesliga, Ligue 1).

In addition to data on the signings of homegrown players, there are further stats on how much Premier League sides have overspent on signings since 2015 in general, with players of all nationalities included in the findings.

Below you can read our findings which are broken up into 12 sections, including the following:

1. How much Premier League sides overspend on homegrown talent compared to Europe's Top 5 leagues 
2. What every Premier League side in the past 5 years has spent over the value of incoming homegrown player signings 
3. The top 10 worst value Premier League homegrown signings since 2015
4. Each current Premier League side’s best and worst value homegrown transfer since 2015
5. The top 10 worst value Premier League signings since 2015
6. Each current Premier League side’s best and worst value transfer since 2015

Europe’s Top 5 Leagues

How much Premier League sides overspend on homegrown talent compared to Europe's Top 5 leagues (Since the summer transfer window of 2015):

Premier League - Premier League sides on average spend £4.5m over a player's value per transfer of an British player. 
La Liga - La Liga sides on average spend £0.2m over a player's value per transfer of an Spanish player. 
Bundesliga - Bundesliga sides on average spend £0.2m under a player's value per transfer of an German player. 
Serie A -  Serie A sides on average spend £1.1m over a player's value per transfer of an Italian player.
Ligue 1 - Ligue 1 sides on average spend £0.8m over a player's value per transfer of an French player.

The top 10 worst value homegrown signings across Europe's Top 5 leagues since 2015:

Harry Maguire to Manchester United - Cost £78.3m (£33.3m over value of player) 
Alessandro Bastoni to Inter Milan - Cost £28m (£26.6m over value of player) 
Danny Drinkwater to Chelsea - Cost £34.1m (£26m over value of player) 
John Stones to Manchester City - Cost £50m (£24.8m over value of player) 
Kylian Mbappe to PSG - Cost £130.5m (£22.5m over value of player) 
Raheem Sterling Manchester City - Cost £57m (£21.3m over value of player) 
Kyle Walker to Manchester City - Cost £47m (£20m over value of player) 
Julian Draxler to Wolfsburg - Cost £38.7m (£18.9m over value of player) 
Rhian Brewster to Sheffield United - Cost £23.4m (£18.5m over value of player)
Aaron Wan-Bissaka to Manchester United - Cost £49.5m (£18m over value of player) 

Premier League - Homegrown Signings (From the beginning of the 2015 Summer Transfer Window)

What every Premier League side in the past 5 years has spent over the value of incoming homegrown player signings (Total)
 

What every Premier League side in the past 5 years has spent over the value of incoming homegrown player signings (Per transfer)

The top 10 worst value Premier League homegrown signings since 2015:

Harry Maguire to Manchester United - Cost £78.3m (£33.3m over value of player) 
Danny Drinkwater to Chelsea - Cost £34.1m (£26m over value of player) 
John Stones to Manchester City - Cost £50m (£24.8m over value of player) 
Raheem Sterling Manchester City - Cost £57m (£21.3m over value of player) 
Kyle Walker to Manchester City - Cost £47m (£20m over value of player) 
Rhian Brewster to Sheffield United - Cost £23.4m (£18.5m over value of player)
Aaron Wan-Bissaka to Manchester United - Cost £49.5m (£18m over value of player) 
Ollie Watkins to Aston Villa - Cost £27.7m (£16.9m over value of player) 
Tyrone Mings to Aston Villa - Cost £20.1m (£15.6m over value of player) 
Alex Oxlade-Chamberlain to Liverpool - Cost £34.2m (£14.4m over value of player) 
 
The top 10 best value Premier League homegrown signings since 2015:

Jonny Evans to Leicester City - Cost £3.6m (£9.9m under value of player)
Ross Barkley to Chelsea - Cost £15.1m (£7.4m under value of player)
Ryan Sessegnon to Tottenham - Cost £24.3m (£7.2m under value of player)
Charlie Austin to Southampton - Cost £4.7m (£7m under value of player)
Joe Hart to Burnley - Cost £3.5m (£5.5m under value of player)

Fabian Delph to Everton - Cost £8.6m (£4.9m under value of player)
Jay Rodriguez to Burnley - Cost £5m (£4m under value of player)
Dale Stephens to Burnley - Cost £1m (£3.3m under value of player)
Sam Byram to Norwich City - Cost £0.7m (£2.5m under value of player)
Aaron Lennon to Everton - Cost £1.3m (£2.3m under value of player)
 
Each current Premier League side’s best and worst value homegrown transfer since 2015:

Arsenal

Best - Rob Holding (Cost £2.7m - £2.5m over value of player)
Worst - Kieran Tierney (Cost £24.3m - £13m over value of player)
 
Aston Villa
 
Best - Joleon Lescott (Cost £1.3m - £2.3m under value of player)
Worst - Ollie Watkins (Cost £27.7m - £16.9m over value of player)
 
Brighton 
 
Best - Dan Burn (Cost £3.2m - £2.5m over value of player)
Worst - Adam Webster (Cost £20m - £11.9m over value of player)
 
Burnley
 
Best - Joe Hart (Cost £3.5m - £5.5m under value of player)
Worst - Ben Gibson (Cost £15.2m - £6.2m over value of player)
 
Chelsea
 
Best - Ross Barkley (Cost £15.1m - £7.4m under value of player)
Worst - Danny Drinkwater (Cost £34.1m - £26m over value of player) 
 
Crystal Palace
 
Best - Alex McCarthy (Cost £4.4m - £2.1m over value of player)
Worst - Eberechi Eze (Cost £16m - £7.9m over value of player)
 
Everton
 
Best - Fabian Delph (Cost £8.6m - £4.9m under value of player)
Worst - Jordan Pickford (Cost £25.7m - £12.2m over value of player)
 
Fulham
 
Best - Joe Bryan (Cost £6m - £1.5m over value of player)
Worst - Harrison Reed (Cost £5.9m - £3.7m over value of player) 
 
Leeds
 
N/A - Have made one British signing during current Premier League stint (Joe Gelhardt from Wigan)
 
Leicester City
 
Best - Jonny Evans (Cost £3.6m - £9.9m under value of player)
Worst - James Maddison (Cost £22.5m - £13.5m over value of player) 
 
Liverpool
 
Best - Danny Ings (Cost £7.5m - £1.5m under value of player)
Worst - Alex Oxlade-Chamberlain (Cost £34.2m - £14.4m over value of player) 
 
Manchester City
 
Best - Fabian Delph (Cost £10.4m - £1.4m over value of player)
Worst - John Stones (Cost £50m - £24.8m over value of player)
 
Manchester United
 
Best - Lee Grant (Cost £10.4m - £1.4m over value of player)
Worst - Harry Maguire (Cost £78.3m - £33.3m over value of player)
 
Newcastle United
 
Best - Ivan Toney (Cost £0.3m - £0.2m over value of player)
Worst - Jacob Murphy (Cost £10.2m - £9.3m over value of player)
 
Sheffield United
 
Best - Jayden Bogle (Cost £3.5m - £2.2m under value of player)
Worst -  Rhian Brewster (Cost £23.4m - £18.5m over value of player)
 
Southampton
 
Best - Charlie Austin (Cost £4.7m - £7m under value of player)
Worst - Che Adams (Cost £15m - £8.7m over value of player) 
 
Tottenham
 
Best - Ryan Sessegnon (Cost £24.3m - £7.2m under value of player)
Worst - Jack Clarke (Cost £9.9m - £4.5m over value of player) 
 
West Brom
 
Best - Kieran Gibbs (Cost £6.8m - £2.2m under value of player)
Worst - James Chester (Cost £10.2m - £8.4m over value of player) 
 
West Ham
 
Best - Stephen Hendrie (Cost £1.2m - £0.7m over value of player)
Worst - Jarrod Bowen (Cost £19.2m - £10.2m over value of player)
 
Wolves
 
N/A - Have made one British signing during current Premier League stint (Luke Matheson from Rochdale)

Premier League Signings of All Nationalities (From the beginning of the 2015 Summer Transfer Window)

What every Premier League side in the past 5 years has spent over the value of incoming signings (Total)

What every Premier League side in the past 5 years has spent over the value of incoming signings (per player)

The top 10 worst value Premier League signings since 2015:
 
Kepa to Chelsea - Cost £72m (£54m over value of player)
Virgil Van Dijk to Liverpool - Cost £76.2m (£49.2m over value of player)
Anthony Martial to Manchester United - Cost £54m (£46.8m over value of player)
Benjamin Mendy to Manchester City - Cost £51.8m (£40.1m over value of player)
Aymeric Laporte to Manchester City - Cost £58.5m (£36m over value of player)
Harry Maguire to Manchester United - Cost £78.3m (£33.3m over value of player)
Paul Pogba to Manchester United - Cost £94.5m (£31.5m over value of player)
Romelu Lukaku to Manchester United - Cost £76.2m (£31.2m over value of player)
Ruben Dias to Manchester City - Cost £61.2m (£29.7m over value of player)
Kevin De Bruyne to Manchester City - Cost £68.4m (£27.9m over value of player)
 
The top 10 best value Premier League signings since 2015:
 
Thiago to Liverpool - Cost £19.8m (£23.4m under value of player)
Alex Telles to Manchester United - Cost £13.5m (£22.5m under value of player)
Ferran Torres to Manchester City - £20.7m (£19.8m under value of player)
Joao Pedro to Watford - Cost £3.6m (£14.4m under value of player)
Bastian Schweinsteiger to Manchester United - Cost £8.1m (£11.7m under value of player)
Moise Kean to Everton - Cost £24.8m (£11.3m under value of player)
David Luiz to Arsenal - Cost £7.8m (£10.2m under value of player)
Jonny Evans to Leicester City - Cost £3.6m (£9.9m under value of player)
Timo Werner to Chelsea - Cost £47.7 (£9.9m under value of player)
Rodri to Manchester City - Cost £63m (£9m under value of player)
 
Each current Premier League side’s best and worst value transfer since 2015:
 
Arsenal 
 
Best - David Luiz (Cost £7.8m - £10.2m under value of player)
Worst - Shkodran Mustafi (Cost £36.9m - £18.9m over value of player)
 
Aston Villa
 
Best - Joleon Lescott (Cost £1.3m - £2.3m under value of player)
Worst - Ollie Watkins (Cost £27.7m - £16.9m over value of player)
 
Brighton 
 
Best - Aaron Mooy (Cost £3m - £7.8m under value of player)
Worst - Adam Webster (Cost £20m - £11.9m over value of player)
 
Burnley
 
Best - Joe Hart (Cost £3.5m - £5.5m under value of player)
Worst - Chris Wood (Cost £14.8m - £9.4m over value of player)
 
Chelsea
 
Best - Timo Werner (Cost £47.7m - £9.9m under value of player)
Worst - Kepa (Cost £72m - £54m over value of player) 
 
Crystal Palace
 
Best - Jordan Ayew (Cost £2.5m - £4.7m under value of player)
Worst - Mamadou Sakho (Cost £25.4m - £11.9m over value of player) 
 
Everton
 
Best - Moise Kean (Cost £24.8m - £11.3m under value of player)
Worst - Gylfi Sigurdsson (Cost £44.5m - £22m over value of player) 
 
Fulham
 
Best - Ryan Babel (Cost £1.8m - £2.7m under value of player)
Worst - Aleksandar Mitrovic (Cost £22.2m - £8.7m over value of player) 
 
Leeds
 
Best - Rodrigo (Cost £27m - £9m under value of player)
Worst - Helder Costa (Cost £15.9m - £8.7m over value of player)
 
Leicester City
 
Best - Jonny Evans (Cost £3.6m - £9.9m under value of player)

Worst - Wesley Fofana (Cost £31.5m - £22.5m over value of player) 
 
Liverpool
 
Best - Thiago (Cost £19.8m - £23.4m under value of player)
Worst - Virgil Van Dijk (Cost £76.2m - £49.2m over value of player) 
 
Manchester City
 
Best - Ferran Torres (Cost £20.7m - £19.8m under value of player)
Worst - Benjamin Mendy (Cost £51.8m - £40.1m over value of player)  
 
Manchester United
 
Best - Alex Telles (Cost £13.5m - £22.5m under value of player)
Worst - Anthony Martial (Cost £54m - £46.8m over value of player)  
 
Newcastle United
 
Best - Allan Saint-Maximin (Cost £16.2m - £6.3m under value of player)
Worst - Jacob Murphy (Cost £10.2m - £9.3m over value of player)
 
Sheffield United
 
Best - Jayden Bogle (Cost £3.5m - £2.2m under value of player)
Worst -  Rhian Brewster (Cost £23.4m - £18.5m over value of player)
 
Southampton
 
Best - Charlie Austin (Cost £4.7m - £7m under value of player)
Worst - Guido Carrillo (Cost £19.8m - £14.4m over value of player) 
 
Tottenham
 
Best - Ryan Sessegnon (Cost £24.3m - £7.2m under value of player)
Worst - Moussa Sissoko (Cost £31.5m - £19.8m over value of player) 
 
West Brom
 
Best - Kieran Gibbs (Cost £6.8m - £2.2m under value of player)
Worst - James Chester (Cost £10.2m - £8.4m over value of player) 
 
West Ham
 
Best - Pedro Obiang (Cost £5.4m - £4m under value of player)
Worst - Jarrod Bowen (Cost £19.2m - £10.2m over value of player)
 
Wolves
 
Best - Nelson Semedo (Cost £27m - £9m under value of player)
Worst - Fabio Silva (Cost £36m - £25.2m over value of player)