Whilst I agree there's a lack of exciting young talent - only two that spring to mind are Holding and Iwobi - I don't think he can be accountable for that either. With the money that pours into the club being at a similar level to United, Chelsea, Liverpool (I won't say City because I still perceive them to be richer, lol) if the story last year about his budget only being £40m can he really be to blame? And with the youth development being at similar levels to others, why aren't more coming through?
My frustrations with him have been an over-reliance on old formations and players that don't work on every game - the former he's shown he's willing to change at the very end of this season and to good success. Once the latter is dealt with* I don't see why he can't be successful. I do wish we'd done a Chelsea last season though and not qualified for Europa League either because the same bad luck with injuries is probably going to resurface.
*[Gemma Collins voice]
FUCK OFF, FRANCIS COQUELIN, THEO WALCOTT, KIERON GIBBS, GABRIEL
(I'm getting frustrated with Xhaka, Lucas Perez not being played, and Elneny being pretty much irrelevant, too, but these three are all decent players imo).