10. Alexis Sanchez Bought from Barcelona for £35m in 2014 and still at the club There are good reasons to argue that the likes of Emmanuel Petit or Freddie Ljungberg should be included on this list ahead of Sanchez but they were very different signings in being additional components to already great teams. Sanchez was able to lift a mediocre team for much of last season, and he may well yet push himself higher up the list, but his considerable transfer fee and fact that he's only played one season keep him at 10th. An excellent first season saw the Chilean score 25 goals, including an absolute thunderbolt in the FA Cup final. Picture: GETTY IMAGES

Credit : GETTY IMAGES