There were more concerns with PSG than just player conflict. Team egos have won big before, right? See Real Madrid's Galacticos. Having older stars and playing in a league that's easy compared to the Champions League doesn't help. Know what? I like this "new" PSG. Without Messi, Neymar, and Mbappe , other players may flourish. The team may play together, determined to prove they're not overpaid prima donnas. May PSG surprise everyone this year? Not likely, but football has seen stranger stuff, right?
We have not yet seen PSG without Mbappe, perhaps only at the beginning of the last season, when the situation with Mbappe was not clear and he was not preparing with the team. Then PSG looked bad, but I admit that the reason was not only the absence of Mbappe, but also that Enrique had just joined the team, and he was just starting to build the team, strategy and game. Anyway, Mbappe was a very significant player for PSG, how it will be now is not yet clear, but someone will definitely take his place and will score, since PSG has always created many chances in attack.