5) Marco Reus (Borussia Dortmund)
Having signed a new contract this season, Borussia Dortmund can thank their lucky stars that they should bag around £50m if they let Marco Reus leave for Arsenal, Chelsea or Manchester United this summer.
6) Harry Kane (Tottenham Hotspur)
A £50m target for Man United, Harry Kane could become the most expensive English footballer of all time if he does leave Tottenham for Old Trafford.