I am actually looking forward to see what Mourinho can do in his next job.
To me he has changed his demeanor quite significantly lately. He seems happier. In his Chelsea-prime 15 years ago he was more Zlatan-arrogant and not grumpy-arrogant as he did become. Even with all the controversy around him it was always a bit tongue in cheek for me. If he can become that guy again I am sure he will be able to manage at the highest level once again - and be successful.
Will he fall back to old habits as soon as he gets a job as a manager again? Obviously easier to be happy on TV talking about things which you don't have any responsibility for - than being under pressure as a manager. I don't know - which is why I'm looking forward to see what happens.
I remember AVB. Never have I seen a manager have such mood swings. At Porto he spoke with calm confidence and seemed rather charismatic. Then quite quickly at Chelsea he became a grumpy old man. AVB gets hired by Spurs and he is all smiles. Every single interview he is positive and happy - even when asked quite tough questions. 1 year later and he is the old grumpy man from Chelsea again.
So I would say the most likely scenario is that Mourinho becomes a moaning old man again, but I am not 100% certain. If a team can hire a happy Mourinho.......
And this is not me trying to convince myself Mourinho will be a good replacement for Pochettino
Even if at this stage I'll take anything..... hopefully not Mourinho though - I think Spurs can do better.