I gave them credit in the past (not Young though, don't think he ever deserved it other than a few games at the start of his United career). Right now its painfully obvious that these guys aren't the required quality for the United team.
''Or, I should say, we don't have wingers of the highest level, like Ronaldo or Di Maria or somebody like that.'' - Louis Van Gaal
You won't see a more straightforward assessment than that. We should just ship out the deadwood instead of trying to shoehorn two 29 year old wingers into wing/full back positions that they just aren't suited for defensively. Its not asking too much to get 2 specialist full backs to cover for Shaw and the injury prone Rafael. I don't mind Cleverley and still think he can do a job as a squad player given his age and decent footballing ability. However, Valencia and Young are just deadweight and playing them in the full back position is just a stopgap measure which is detrimental to the team in the long run.