I'm sad he's leaving but I'm highlighting his flaws, which have been genuine frustrations this past two seasons in particular, because I genuinely think United is one of the few places he could go to and fail.
It's not changing the goalposts. I was initially responding to comments saying he would give youth the chance, then to questions of why I still rated him despite that, but then also why I thought he would fail at United despite really rating him as a manager.
He's not ruthless enough in cutting the dross, because he isn't willing to leave those spots to talents who haven't proven they're reliable first-team footballers yet (but how could they have?), and is in that same way too cautious in holding on to players for depth even when they aren't going to help bring the club to a higher level anymore.
The awkward farmer part is why I think he'll fail at United of all clubs in particular, combined with the structure of the club and that the nature of (some of) the players in your dressing room, especially if, if I'm to believe a lot of posters on here, that dressing room calls for a massive overhaul.
As an example of my frustration with trusting youth, is his interview just this month about why he continues to call up (the never played) Labyad over our (super)talent Unuvar, who is now the most consistent performer in our reserves (who play in the Dutch second tier) and has built up his physical capacity to the level expected (this was his issue previous season):
https://www.voetbalzone.nl/doc.asp?uid=401599
The problem though is that Unuvar can never show that he can make the difference for the first team if he isn't given the chance in the first place.
Again, Noa Lang was in this exact same position, and went to Brugge, and in his first season destroyed the Belgian league.
So the same player who was deemed unable to make the difference, even coming from the bench, for Ajax was somehow good enough to immediately be basically the best and most decisive player in the Belgian league.