Crisps I think your right he has ruined his reputation and he has not got the ability to fix it
I will reserve judgement until the transfer window closed if he doesn't sign any quality then indeed it would be time for him to leave and get someone in with fresh ideas, though not his fault that we are suffering with so many injuries.
Not even Wenger as shite as he is can take us to relegation in 7 years.
Give him at least 10-15 years for that. 7 of those has past.
Hopefully he'll be gone before it happens