The nine most expensive buyout clauses in world football: Arsenal and Chelsea targets set to cost mega money

5. Koke – Atletico Madrid

Buyout fee: £48m

The Spaniard only recently singed a new deal with the former Champions to ensure he doesn’t slip out of the backdoor quietly. That hasn’t stopped a number of top European clubs from maintaining their interest, though. Chelsea are still heavily interested, but Atletico are still confident they can hold on to him for the foreseeable future.