If they can't find a suitable replacement for Mbappe, PSG will not be able to perform well next season. Because Mbappe was the most important player in PSG's squad. Coach Luis Enrique experimented with his squad by keeping Mbappe on the bench for several matches last season. But without Mbappe, PSG's overall performance was not very strong.
Luis Enrique is a very experienced coach. I have no doubts about Enrique's ability. However, if PSG are to do well in next season's Champions League, PSG will definitely need a suitable replacement for Mbappe. If not, the team will not be able to do well in the Champions League next season. It will also be difficult for PSG to win the Ligue 1 title at the same time.
PSG is in a dilemma due to their own decisions, while Mbappe feels free from the shackles that have bound him to the club. It is clear that Mbappe is more enthusiastic about playing at his beloved club Real Madrid after waiting so long. Therefore Enrique will now work harder to ensure the club's balance is maintained. Indeed, without Mbappe there is a main axis missing, but PSG finances are stable and they can bring in a striker this summer. Note that the principle of bringing in players must be based on the quality of the team that wants to develop, not just to waste money. The PSG president must immediately change his mindset regarding club management, even though the finances are adequate, this needs to be accompanied by the ability to think long term. Nasser Al-Khelaifi is a character who doesn't want to learn from other people who are more successful than him. If he wants to change then take Florentino Perez's thinking in managing a team.