There will be an impact felt when Messi leaves, but on the other hand, of course, things like this can still be minimized if they immediately move quickly to find other fresher players, but don't let the fans give high expectations because they are afraid the same thing will happen to Messi. can happen again to new players when it doesn't match their expectations.
Now Asensio is expected to be one of the strong candidates at PSG, hopefully he will not be damaged again in terms of fame by some irresponsible fans.
The impact might not be that big for PSG if the team can find a replacement that is no less good than Messi more quickly. However, during this break, almost all teams will try to find fresh and young players to replace the old players who have left the team. That's why all teams that have enough funds will move quickly to get the new players they want during a break like this, especially for teams like PSG who generally really need new players to have a better next season than the previous season.
As I said before this depends on how PSG find suitable players.
For a new player like Messi there won't be one I think because he is extraordinary but to find a player who matches PSG's vision it can still be done and of course this can still be found now with the finances and time that is still long enough I think they can do that though the pattern may still be the same because it only revolves around Mbappe when talking about PSG.
Well I agree with what you say, PSG has to know which players are the best to adapt to their style of play, it should be noted that they had the most dangerous trident in the world Messi-Mbappé-Neymar, nothing more and nothing less than two footballers from the most influential is an Argentine and a Brazilian considered the best in the world and a Frenchman who shows that French football, apart from being very elegant, has players that are getting better and better and of a high level, if they did not manage to win the UCL , What can the Sheikh expect if I have not yet seen players of their level, there are some who are young, but who do not stand out like them, I think that PSG made the mistake of their Lives by leaving Messi and leaving the Coach , I would never in my life Leave Messi.
The fit is important because in a club it is not just the players that are looked at but the coaches also need to be noticed.
Last season their players, as you said, were so luxurious but the coach's authority was very little in this matter which made even if they continued to force the results in the end the same nothing changed because the players are good but without good tactics it will remain ordinary.