Ok, but that's not fair, even to Mourinho. Mourinho left Inter for Madrid, understandable. Even at the time Inter couldn't hope to compete with the Spanish giants or English football. And from what I remember the owner achieved what he set out to achieve and wasn't gonna spend anymore.
Conte's only real, unjustified falling out was with Juventus. I'd argue he rightly told Inter and Roman to feck off. You think, if Ten Hag comes here, would just be a "yes, sir" to the Glazers? He'll have ambitions, all top managers do. The only reason Klopp and Guardiola are still at their respective clubs is because they've been given everything or almost everything they wanted to. People have to understand that there are no long-term or short-term options in football. Managers are either successful or not. If they are and they are happy at the club, they stay. If they're not happy or not delivering results, they are sacked or leave. It's that simple. Guardiola's tenure at jobs have been 4 years, 3 years and now going 5 years with City and giving hints that he is about to leave. Not really that long-term, is he? Klopp himself has almost more or less confirmed that he is leaving Liverpool at the end of his contract and taking a break. Ironically, only SImeone seems to be what United fans desire of a "long-term" manager and even he switched places left and right before finding his place at Atletico.
We need to be run like a big club. Managers are here to be successful. If they are and they keep that success, they can stay for as long as they like. If not, they can go. This is how Bayern and Madrid are run and everyone here constantly praises them for good manager. Bayern and Madrid circle through managers like candy, but it works. Why? Because often times a manager will not work, even if successful at his prior jobs. But when an appointment works, you get a treble or something special. That's how success is bred at those clubs. We need to adopt that approach and stop with the romantic feeling of DNA's and what not. Never gonna achieve anything in football that way. SAF came to us with a massive success on his back and had no affiliation with the club. He was not a former player, he was not connected to the players or management here, he was not a fan, he didn't know shit of the "United Way", but we went out and got him, and we hit the jackpot with that. There won't be another SAF, that's true, we won't dominate the league like that ever again, but we have to adopt that same approach we did back then if we want to be successful. If we still rely on the idea that any manager that comes here has to stay here for 10 years and emulate SAF, well, we're never going to achieve absolutely anything, despite the money we have.