This shouldn't be the criteria. We should be trying to appoint the best manager rather than cycling through second rate managers, wasting time and money
Van Gaal is not a second rate manager, he is the best available manager in the summer and imo up there with the Top 5,6 six guys we could think about, but none of the others is available. We are wasting time and money with Moyes, because he never showed in his long PL career that he is quality enough for the United job. We missed a opportunity last year with Guardiola, Ancelotti or Mourinho going to new clubs, we would finally take a opportunity if we decide to get vG and not waiting till he will settle with Tottenham. The same "meh not good enough, we only need the best" thing is exactly the reason why our midfield is totally crap. Guys like Vidal, Gündogan, Rakitic not fancy enough or too unproven, not PL proven or any other excuse and now we are playing with old Carrick, unfit Fletcher, Cleverley and the Belgian bush of hair and dreaming about signing those guys for 40 million+ or signing Pogba, which we sold for peanuts, for a ridiculous amount of money.
van Gaal is imo exactly what we need, after Fergies retirement a coach like him was needed to improve our tactics and modernize our playstyle. A strong person who kick the players in their asses, get rid of some deadwood and give us a identity on the pitch again and to go on after Fergie, his time is over, we should start a new era and stop trying to turn Moyes into Fergie 2.0 or dreaming about a unlikely repeat of history. A van Gaal appointment would be surprising for me, but in a good way, that would be finally a football/tactical decision and not another sentimental "United way of thinking, because we are different" approach.
I don't have any doubts about his behavior, I think some people don't realise, how Fergie was hated outside United. He was not a saint either, but he was our "bastard"
Like most of Mourinho's teams love him and we will be fine with van Gaal doing and saying stupid things to back our club.