When it is painfully evident that someone is either not good enough, bad fit for the club or simply past it? With Moyes we held on to him for 5 months too long, same with LvG and now you see the same pattern developing with Mourinho were people are willing to giving another season while deep down knowing it will take us nowhere. Be honest, in modern era how many times managers managed to succeed or turn things around at the top clubs (if you don’t consider current United a top club step down a level below that (Dortmund, Liverpool, Atletico etc.)) after being underwhelming in terms football on show/trophies for more than a year from the start of their tenures? Genuine question that, any examples out there that would back up this logic? Or is it just pure wishful thinking? Fyi, I strongly supported Mourinho’s candidacy after LvG as I felt he was destined to succeed with us and bring us back to the top and felt that he clearly had intentions to be more attacking at the beginning.