Can we please drop this narrative that it was a complete disaster?
In his 2 seasons here he finished 3rd and 8th and reached 3 cup finals, winning 2 of them. This after taking a team filled with drama that gave up, finished 7th and hasn't won a trophy in 5 years.
So far league aside, looking at ETH's cup success. We lost 1 cup final to City due to De Gea constantly booting the ball to their players. We lost the EL semi-final due to De Gea and Maguire turning our defense into a circus. We also dropped out of this years CL due to Onana's howlers primarily.
All in all, these are individual errors that can be fixed.
In the league, that's a different conversation: his stubborness has to be questioned, but even then it looks like it clicked for him that you can't persist with the donut shape and expect to win anything.
All in all, far from the disaster you and most posters claim he was.