This is the first major change that PSG is now confronted with ever since the Sheikhs took over the club. Building it up and buying a lot of players is one thing, but one you had some of the best on your team and they all leave within one year that is hard to deal with.
It would then be Messi, Neymar, Ramos, perhaps Mbappe and that may not be all yet. Without all those names a good chunk of the publicity will also be gone, which was one of the goals that PSG wanted to achieve with these players.
Things like this shouldn't need to happen and the management should be better prepared for all possibilities that will happen, at this time PSG's condition is really chaotic after several of their players left for other clubs. The effect is quite dangerous for the club in the next season and even though they have a lot of money to buy new players, but if this is the case then I'm sure other star players will find it difficult to accept offers to play for PSG.
I want to see how Mbappe's speculation will end in the current transfer market, whether he will really leave or will he still stay for one more season at PSG. But according to my belief he will stay this season and even if he leaves it is very likely that the transfer market will come. IMO
But when Mbappe leaves that also sends some bad signals to the rest of the market. PSG won't like any of this.
Obviously that will have a bad impact and will also affect the club's next season because they have to find a replacement that is commensurate with the players who will leave and it will likely be difficult for other players to accept offers from them.