It becomes a very slippery slope

Manchester United are one of the biggest clubs in the world.

They do not bow to the demands of anyone, even if it is Real Madrid.

Caving in and selling Di Maria back to the La Liga side just shows that United are the weaker of the two – and it gives a poor impression.

First Ronaldo, then Di Maria, then De Gea? No. That simply cannot be allowed to happen.