Well, how bad is he?
He isn't as bad as some now have concluded. But he has serious flaws as a player, and when those flaws are mercilessly exposed - he looks like shit.
I dunno. To me, having seen him regularly over a full season, he's just not up to scratch technically and tactically as a
defensive keeper (kinda important, that
defensive part).
You can argue that we haven't seen the best of him as an
offensive keeper (his passing, his ability to initiate attacks) because we've been disjointed and generally not very good - and, yes, I won't dismiss that argument.
You can also say that we've been setting up in a near suicidal manner (allowing the opponent to get at us for fun), which has put him under much more pressure than he
should have faced in a well-functioning system (for a supposed top team). And I can sort of buy that too.
But that doesn't really explain what seems like a basic lack of technical (and tactical) prowess as a...goalkeeper (on the highest level).
It's obvious enough that he would've looked infinitely better for a hypothetical team that was very dominant in possession and allowed very few direct chances (shots), and - again - you could argue that United
should be that team. But - nah, on the whole he looks a bit like a busted flush. Much like the man who recruited him.