Manchester United have experienced a problem in recent seasons where unwanted players become unsellable, and have to wait for their contracts to expire. Manchester United are still dealing with the unwanted effects of the Ed Woodward era, where underperforming players were handed hefty contracts, hoping they could be sold for high fees later on. Yet all this did was ensure United were stuck with them, with no players willing to pay up their very high wages. Anthony Martial is one, handed a new contract extension under Ole Gunnar Solskjaer, he is one of the club’s highest paid players, and most…