4) Ander Herrera
A player who only joined United this summer, Ander Herrera is another promising player who hasn’t really been used as much as merited. The Spaniard has shone whenever given a chance in the starting lineup, but van Gaal has continued to keep him on the bench despite not having many other options in the creative midfield department. With United crying out for a player of this quality and calibre, it seems strange for the manager to delibirately bench him when he’s only just arrived and barely been given the chance to show what he can do.