4 - Robin van Persie
Robin van Persie has found life under Louis Van Gaal at Manchester United difficult and could leave before the expiration of his contract in the summer of 2016.
He looks a far cry from the forward that fired the club to their last league title in 2013, and after fading under David Moyes now looks a player unable to fight the inevitable decline. Rivals Inter Milan have been linked with a sensational switch, with the United hierarchy unlikely to sell such an asset to any other English club.
Much also depends on the form and fitness of Columbian loanee Radamel Falcao, who is now raring to go after reaching full fitness following a calf injury.