2) Alberto Moreno (Sevilla)
Linked with a whole host of top clubs this summer, Chelsea included, Alberto Moreno looks a terrific prospect after his outstanding displays for Sevilla this season. The 22-year-old is up there with the best young defenders in Europe at the moment, and has previously been linked with Liverpool and Real Madrid in potentially big-money moves, though he remains available after little progress in either deal. A highly attack-minded player from the back, Moreno would have been a great outlet out wide for Chelsea next season, and another more long-term option for them to replace the legendary Cole.