Fifa has published a comprehensive report on international transfers over the past decade: https://www.fifa.com/legal/football-regulatory/stakeholders/fifa-fund-for-players/media-releases/fifa-publishes-report-on-ten-years-of-international-transfers The top thirty clubs by spend were all in Europe, twelve in England and five each in Italy and Spain. they accounted for 47 per cent of all fees. The combined loss made by English clubs was £5.2bn with £670m going to agents. The top ten clubs by spending on transfer fees were: Manchester City Chelsea Barcelona PSG Real Madrid Atletico Madrid Manchester United Arsenal Juventus Bayern Munich Clubs outside the top six in England in the top thirty were (in order) Leicester City, Southampton, Wolves, West Ham, Everton and Newcastle.