He's been bad for us, that much is true regardless of his good record elsewhere. The two squad issues you mention are his doing, the injuries less so, but it's the job of the manager to instill confidence. Look at the teams Ferguson spurred on to win things when they were just better than average - that's confidence and good tactics - excellent management from the master. It can be argued that Louis Van Gaal has taken the team backwards with his squad reshaping.

There's no doubt that the Louis Van Gaal/Manchester United project has failed and it's about time he was shown the door. He definitely needs to be relieved of his duty in the summer. We need somebody who has either the experience of winning the PL, or somebody who has the ability to win the PL and someone we can look at to build a team. Jose Mourinho would be good for his ability to win things, but is a short term option and I'd be worried about his record on using youth players - but I do think Giggs could perform some sort of dual role championing our youth team and bridging the two. Pochettino is someone I've liked since his Southampton days, and he's done wonderful things with Spurs and he's matured into a great manager playing defensively solid but exciting football, with young British talent! Diego Simeone is someone I'd be looking at too.

I've drunkenly rambled on, but yeah he might have a great record and might not be a bad manager per se, but he's certainly been dog shit for us!