5) Petr Cech (Chelsea)
Chelsea manager Jose Mourinho certainly has a big decision to make this summer as he picks his number one for next season. Although Petr Cech has been the undisputed first choice at Stamford Bridge for much of the last decade, his form has dipped somewhat at points this season, and that could lead the Blues to consider promoting impressive youngster Thibaut Courtois to a starting spot between the posts. Cech remains one of the best keepers in the world on his day, and will surely not be short of suitors if he does move, with Paris Saint-Germain showing an early interest in the Czech Republic star.