5) Arjen Robben
Sold to Real Madrid as a youngster, Arjen Robben started brightly at Chelsea and should have been given more time despite some injury problems, becoming one of the best players in the world at Bayern Munich.
6) Kevin De Bruyne
A player with better stats than Eden Hazard, Kevin De Bruyne’s sale now looks like a big mistake as the Belgian shines masterfully at new club Wolfsburg.