yep, indeed PSG will not worry about their finances in order to improve every line and it has been proven that they are not only retaining Mbappe but also trying to get new players with good performance such as Dembele and also Marco Asensio who will help strengthen the attack line and I see new players this has a good contribution and can strengthen chemistry with mainstay players like Mbappe.
I believe that this season PSG will still appear strong, but in the next season I cannot be sure whether PSG will still be strong after Mbappe departure.
The club is owned by Arab owners therefore finance is not their problem at the moment, because they're financially capable of bringing top quality players into the team, and that's why they were able to offer Mbappe a very huge salary to keep him in the club for another season or more, however the newly added players they brought in to support Mbappe are doing well so far especially Asensio that's been really impressive with brilliant performance and I love the chemistry he's had with Mbappe and hopefully they'll be able to perform well in the UCL and stand a good chance to secure it.
Their performance this season would determine Mbappe's stay in the club next summer cause he had his mind set on leaving but made a U turn and i think if the team are unable to perform well in the UCL like they did last season Mbappe would be forced to move to a club where he stands a better chance of winning major trophies other than a domestic cup every season