4) Thibaut Courtois (Chelsea)
If Cech does survive competition from Courtois as Chelsea’s number one, Atletico Madrid will surely face plenty of competition to land the immensely talented Belgian on a permanent deal. The 22-year-old spent three seasons on loan at the Vicente Calderon and has now established himself as one of the best goalkeepers in the world after forming part of a rock-solid Atletico defence which won the Copa del Rey last season and followed it up with the La Liga title this term, as well as a phenomenal run to the Champions League final. Courtois’ incredible reflexes and command of his area are superb for one so inexperienced, and the likes of Barcelona, Real Madrid and PSG have all shown an interest in signing him if he is made available.