That's right, Luis Enrique needs to recruit new players in the next transfer window to fill the positions left by Mbappe, Osimhen and Rahsford are worthy of being PSG main targets when the transfer window opens. Luis Enrique can update his strategy to suit the depth of the squad he has, of course it will take a little time to adapt. Meanwhile, PSG will continue to dominate Ligue 1 even though Mbappe officially leaves, they are too powerful for other teams.
Regarding PSG's dominance in League 1, I don't think Luis Enrique needs to worry too much even though Mbappe will leave for another team in a more different league. But Luis Enrique must also have time to think about who he will target in the next transfer window by preparing sufficient money. Because if the target is a player whose level is not much different from Mbappe, of course the costs that must be prepared are not small and I am sure that PSG has the ability to do that.
Ligue 1 teams are quite weak compared to PSG. So Luis Enrique need not worry about winning the Ligue 1 title. Winning the Ligue 1 title is not a difficult task for PSG. So next season Luis Enrique will build his squad with the aim of winning the Champions League title.
PSG need a suitable replacement for Mbappe. It is still uncertain which player Luis Enrique will add to the squad as Mbappe's replacement. But OSimhen or Vlahovic could be a worthy replacement for Mbappe. These two players have the ability to score a lot of goals.