Would be hilarious if he sticks it to PSG by playing out the last year of his contract and leaves them on a free next summer.
He most probably will block every move PSG receives a bid for until Real Madrid shows up, in the last week of the window, with a cheeky 80m or 90m bid that they will most probably accept if they haven't gone full vengeful by then.
If I was PSG, considering they have unlimited money, I would refuse every bid for him, including Madrid and not include him in the squad for the league or CL. If you want to play some football this season you'll break the contract from your side, pay whatever the clause says you have to and that's it
With that said, PSG 100% deserves what is happening to them. This is all of their own making.