Really?He didn't sign a new contract, only a contract extension (on astronomic wages, admittedly).
Contract expires in 2025, by which time he'll be 26 (27 in the December).
He's rinsed PSG because they allowed him to, and also because he comes from Bondy (which, believe me, is a far bigger sh*thole than anywhere in Manchester).
No idea whether he's a d*ckhead though, but it can't be easy playing with Messi & Neymar and having to do all the work whilst they're getting their beards trimmed.
Well, here's just one example (you can do research to get more context about that situation).
Other examples, also please do the research by yourself.