Messi has cut ties with the club, Mbappé may leave the club soon, Neymar will be given the main striker responsibility for PSG if there is no injury problem. If Neymar can stay fit for a full season, he will be a gift for PSG, as he has already proved. He scored two goals and an assist in his last game after being sidelined for six months with an injury and was named player of the match, proving that the world's best never goes away. PSG's problem was the extra stars in a team that underperformed on the field, with Mbappe gone, Luis Enrique would probably form a great team with Neymar.
However, he may not stay healthy all season long, also you can't expect him to play 40-45 games a season, that's a lot of games and I am guessing that there is a potential he may not end up playing all that much neither. This is why it would make sense if he ends up with a result that is more like 25 to 30 games played, rest will be played by someone else.
This is why I keep saying that they need to get rid of these two players and get some other 2 players and they will be much better. Get rid of Neymar and Mbappe, sure they are talented and I agree that the players they will get won't be as talented as them, but if they sell these two, they will get rid of all the drama, and they will get players who will actually play.