Age: 21 Club: Crystal Palace Position: Defender With Rio Ferdinand nearing the end of his career and with Nemanja Vidic returning from injury ahead of the new campaign, United could find themselves in real troubles if both players fail to regain constant form. Manchester United may have Smalling, Jones and Evans to fall back on but having an additional talent like Clyne wouldnt hurt the club. Nathaniel Clyne has played a total of 137 games for Crystal Palace since 2008, which shows how much the club rely on his performances and he could be seen as a long term replacement for the now retired Gary Neville.