PSG had three superstar players on the team and they tried their best to have a better performance in the Champions League but still, they couldn't do that and even the players they had like Messi left the team. I think now after Mbappe leaves, they will have bigger problems but as Enrique said, they will try to fill the place of Mbappe in the team by using all the players they have by having better teamwork.
Enrique also said that they need to learn to play without Mbappe. In fact, they had a very good season, considering that the team was left without Messi and Neymar, they even had to beat Dortmund, but it happened as it happened. I’m almost sure that PSG will be able to replace Mbappe with someone as good as him, new young players are constantly appearing who are capable of playing no worse and they will become new star strikers.
I see a lot of talk that PSG can buy Vinicius and I have no doubt that they can afford it. It will even be a retaliatory move if this happens, I think that Vinicius can be a top forward at PSG.