Everyone will see how Luis Enrique will be able to manage the PSG team next season with Kylian Mbappe no longer in the squad. Because so far there has been little dependence on Kylian Mbappe at PSG so Luis Enrique will have no other choice but to look for new players. And also change things that are still dependent on one player into more solid teamwork in order to stay on track to win next season in two quite prestigious competitions of course (Ligue 1 and Champions League).
So far Mbappe is a player who has had a big influence on the PSG squad so it is not surprising that there will be a big effect left after Mbappe's departure, but football is not about one player and when a team is left by a player, another player will definitely replace him regardless of status these players, what is happening to PSG now is no different from when Madrid lost Ronaldo and Barcelona lost Messi, but in fact they can slowly let go of their dependence on these two players after new players appeared which they could rely on, that's why Enrique should be able to look for other players to can replace Mbappe next season, even though the player is not a star but he must still have a high scoring instinct and be able to work well in a teams.
Obviously the gap in PSG created by the exit of mbappe is something that PSG has to definitely get fixed because if they don't, it will be a huge problem to them and the season is about to start again so it's important they get such vital replacements before it turns out a serious problem on their side, but I believe that Enrique wouldn't allow his team turn out Messy due to the absence of a particular player evwnnif ehs been really vital to them while he did stayed in the team. Tho it may seem like it will be difficult but it's still very possible that they may get a new good replacement who may literally fit in so well but we may be thinking otherwise till the performance comes up and we get to see the results within and at the end of the Season.
The gap will still exist but it will not be as big as when Mbappe was still at PSG, so far we know how much ego and privileges Mbappe has at PSG and this indirectly disrupts the stability of the team, so when Mbappe leaves PSG now that should be the case will make Enrique job in forming a more collective team easier, currently Enrique only needs to look for some new players and also form a team framework so he can apply a collective playing system like when he coached Spain and Barcelona, if only Enrique was able to implement the system games like when he coached Spain and Barcelona, I am quite sure they will be able to win the Champions League in the future especially with strong financial support from PSG.