Although there is a 120 million euro exit clause in his contract valid until 2028, Benfica has stated that they will not force this clause in this transfer. PSG is entering a new era with the new season, the legendary squad they had previously established has already been destroyed, Mbappe has also left and they are now trying to build the team on a new system.
I think PSG should focus on transfers that will contribute to the team rather than expensive transfers. Of course, they can buy players at the prices you mentioned, but there are many missing players in the team and a team like PSG can produce its own stars. There are many young and potential players in the world and if PSG is a big team, they should find such players.
Mbappe is gone but it is not a dream to see a stronger PSG. If PSG can find players who will contribute to the team and have star potential during the transfer period, PSG, which everyone thinks is losing power, can rise again.
You are wrong PSG returning to good days doesn't mean they should hire super expensive players like Messi and Neymar again. They already have a good coach who can help this team to have good performance and he can help PSG to hire better players instead of just hiring superstar players.
I think time after time with Enrique, PSG can have a good time and get progress and improved. s
PSG don't have any rival in their domestic league which makes them not in any competition with other clubs and no matter how they play, they will still win the league so what they need to to build a strong squad to win UCL.