8. Wayne Rooney (Manchester United)
After submitting a transfer request at Manchester United, Wayne Rooney will surely add his name to the most expensive signings of the summer. Despite some indifferent form this season, the England star is still highly rated all around Europe, with big teams such as Barcelona, Real Madrid and PSG all showing a significant interest in the 27-year-old. On his day, he’s a £50million player, but his desire to leave United could see him move for more like £30million this summer, which many clubs will see as a very decent price for a player of his potential. Even Chelsea and Arsenal are interested, though they may have to pay more as United will be keen not to sell Rooney to another English club.