Top-10 most expensive transfer buys in Premier League history

6. Kepa Arrizabalaga (Athletic Bilbao to Chelsea – £72million)

The only goalkeeper on the list is Kepa Arrizabalaga, who moved to Chelsea in what still is a world-record fee for a player in his position. The Blues needed someone to replace the outgoing Thibaut Courtois and took a big punt in triggering the Spaniard’s Athletic Bilbao release clause with a club-record offer.