4) Nemanja Matic/Koke (Chelsea)
With some doubts over whether Cesc Fabregas’ fitness can see him perform through a whole season, Chelsea have been linked with a move for Atletico Madrid starlet Koke, who is one of the best young midfielders in the world. The Spanish international managed an excellent 14 assists in total this season, showing that he could play that Fabregas role perfectly if brought in by the Blues, with Nemanja Matic still the ideal player to be the more defensive of the two central starters.