The best that can happen for PSG right now is if they can convince Mbappe to take the Al Hillal deal. That deal solves a lot of issues for PSG. They would not have to pay Mbappe the agreed 65m, they also receive a huge sum for Mbappe and have money to spend on other signings.
I'm just trying to imagine PSG benching Mbappe even the champions league and I don't see a scenario where that happens. It would be a disaster for bother Mbappe and PSG.
The best option for PSG is to persuade Mbappe to take the deal and move to the Saudi league for a season. The deal would bring in some money for the club and would go a long way in solving lots of issues. And I honestly don’t see Mbappe leaving for Saudi Arabia anytime soon.
There’s no reason why a coach would have his top asset sitting on the bench during games. Whatever issues there is between player and manager, the manager would want to win games and Mbappe could help him do just that. Mbappe is a player that at the moment, can’t be kept in the sidelines.