Based on several sports media reports that I have read, it looks like PSG will lose a lot of players next season who decide to move to other teams. I think Mbappe and some of his friends will leave PSG for a career with another team that has a better chance of winning the Champions League title next season and this will leave a hole for PSG.
Messi has also not ruled out leaving again next season, but I'm sure he will honor his contract if Mbappe decides to move. But in other news, Pochettino and Mbappe will stay at PSG next season and I believe that is a rumor that is not certain to happen next season. If many PSG players decide to leave next season, then PSG will certainly spend a lot of money to get a replacement. Obviously they can do it thanks to their financial strength, but maybe not much if in the end the players currently rumored to end up staying next season.
Messi has also not ruled out leaving again next season, but I'm sure he will honor his contract if Mbappe decides to move. But in other news, Pochettino and Mbappe will stay at PSG next season and I believe that is a rumor that is not certain to happen next season. If many PSG players decide to leave next season, then PSG will certainly spend a lot of money to get a replacement. Obviously they can do it thanks to their financial strength, but maybe not much if in the end the players currently rumored to end up staying next season.
I think Mbappè will stay in Paris for 2 more years otherwise why is he just not announced yet his departure for Madrid?
Unless he will go to another team.