This is interesting
Man Utd top league of transfer losses with negative spend of more than £1bn in last decade
https://www.bbc.co.uk/sport/football/66726456https://football-observatory.com/MonthlyReport87In Euros
Manchester United
(ENG)Spend 1'959 Income 563 Net -1396
Chelsea FC
(ENG)Spend 2'637 Income 1'604 Net -1033
Paris St-Germain
(FRA)Spend 1'761 Income 751 Net -1010
Arsenal FC
(ENG)Spend 1'380 Income 509 Net -871
Manchester City
(ENG)Spend 1'953 Income 1'097 Net -856
Newcastle United
(ENG)Spend 1'016 Income 345 Net -671
FC Barcelona
(ESP)Spend 1'779 Income 1'116 Net -663
Tottenham Hotspur
(ENG)Spend 1'264 Income 655 Net -609
Milan AC
(ITA)Spend 979 Income 434 Net -545
West Ham United
(ENG)Spend 1'009 Income 482 Net -527
Aston Villa
(ENG)Spend 865 Income 383 Net -482
Liverpool FC
(ENG)Spend 1'355 Income 894 Net -461
Al-Hilal SFC
(KSA)Spend 477 Income 20 Net -457
Juventus FC
(ITA)Spend 1'583 Income 1'134 Net -449
Everton FC
(ENG)Spend 1'028 Income 636 Net -392
Crystal Palace
(ENG)Spend 519 Income 143 Net -376
Bournemouth AFC
(ENG)Spend 575 Income 231 Net -344
Bayern München
(GER)Spend 1'043 Income 700 Net -343
Real Madrid
(ESP)Spend 1'279 Income 954 Net -325
Nottingham Forest
(ENG)Spend 486 Income 176 Net -310