#4 Isco, Real Madrid (£624 million)
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Isco signed for Real Madrid from Malaga in 2013 for €35 million. He initially had teething problems with manager Ancelotti unable to consistently accommodate him in the team. Despite this, he managed a very respectable 11 goals in 53 appearances in his first season. In his first season, he most notably featured in a 4-1 Champions League final win over Atletico Madrid.
The next season Isco impressed once more this time featuring more regularly as he adapted to the side's style of play.
Isco form earned him a place in the FIFA Club World Cup run for Real Madrid as he started and starred in all the games Madrid played in as they won the Club World Cup in 2014. His form impressed many and many speculated that he might be considering leaving Real Madrid in order to become a regular first team starter in all competitions.
Last season, Isco decided to stay at Real and was instrumental in their league win as he featured 30 times as a part of manager Zidane's new rotation policy. His form earned him a new contract until June 2022 and a release clause of £624 million.