Losing a star player and a mainstay player in the club is indeed a big blow for PSG because their success so far cannot be separated from the contribution of Kylian Mbappe who created many goals so that PSG won in many of the matches they played and next season Kylian Mbappe will no longer be at the PSG club again and the club also needs to think about a replacement for Mbappe for next season. Yes it is possible to recruit a player with potential like Mbappe, it is difficult to find but at least PSG is looking for a player with performance that is close to that so that PSG can continue to be the strongest club in league 1 and continue to dominate.
I think Mbappe's replacement at the club won't necessarily be like Mbappe and PSG knows that, but at least PSG has tried so that their performance doesn't decline when Mbappe is no longer at the club, they have to optimize the performance of the players they have and work together compactly to create solidarity between players so that the club can be successful and be at the forefront even though it is only in League 1, in the International League we don't know what will happen to PSG next season without Mbappe.
I think a team like PSG which has strong finances will not lose much and of course they will be able to quickly bring in the players left behind by Kylian Mbappe, although the quality will not be the same, but to get closer to Kylian Mbappe I think PSG can get him.
On the one hand, I see that there is also an advantage for PSG in losing Kylian Mbappe, this can make this team much more independent so that it doesn't always depend on Kylian Mbappe and focuses on building a team with an even squad in all lines.