Inter were a good side domestically (helped no end by the scandal that meant Inter won titles they didn't 'win' plus Juve's relegation) but until Jose took over they did very little in the C.L. Jose comes in, loses his best player in Ibrahimovic and wins their only ever treble. It was a fantastic job he did there. Ditto Porto and us.
When you look at how Real have faired in the league since he left, you'd have to say he did a relatively good job there as well with record point hauls and taking a title off Barca. He made C.L semi every year and went out on pens twice if memory serves. The guys a serial winner.
Our failures this year can't just be levelled at the manager IMO as he is not doing anything significantly different despite having effectively the same squad. No one can seem to put a finger on it and it's probably a combo of lots of smaller issues snowballing into a disaster. It's practically unheard of to happen nowadays but there is always a first!
I think Jose is up against a few bad apples who are spreading poison throughout the squad. Get rid I say.
Kind of like your team's attempts at winning games this season.