9) Iker Muniain (Athletic Bilbao)
Recently linked with Liverpool, Athletic Bilbao winger Iker Muniain has been a top performer in La Liga for some time now and could follow his old team-mate Ander Herrera out of the exit door in this year’s transfer window. Manchester United have been linked with him in the past, and any team that lands him would no doubt be bringing in a real star of the future, with the 21-year-old already having proven himself as a top talent and consistent performer, notching up over 200 first-team appearances for his club already. The Spaniard has also won one cap for his national side, as well as winning the European Under-21 Championship twice.