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.
Supported with good financial is not problem for PSG looking for replacement for Kylian Mbappe position and keep easily for dominating in Ligue 1, Luis Henrique will find other players with level gap not much difference from Mbappe but how possibility for PSG will dominance in Champion League without him? Currently, PSG still hasn't official announcement who will replace Mbappe position after announcing will leave PSG next season, some of target from Victor Osimhen, Rashford not confirming yet because PSG still waiting with the bid offer price from Napoli and Manchester United.
PSG seems focus for this season for winning Ligue 1 and working best result in Champion League, they will face Barcelona on quarter final and few week before this season ended seems they will announce with players replacing Mbappe position.