7) Eric Dier (Tottenham Hotspur)
At just £4m, Tottenham Hotspur’s new defender Eric Dier should see his market value rise hugely in the next few years if his early performances for the club in the Premier League are anything to go by. The England youth international started his development at Sporting Lisbon and has adapted quickly to the pace of the English game, looking a superb talent and key player for Mauricio Pochettino’s side already.