As good as Haaland has been with Manchester City and Guardiola, I don't think he will be interested in leaving next season. He might be able to win more titles if he stays with Manchester City. Why will he leave Manchester City so quickly? Guardiola is also likely to be keen to keep Haaland in his squad. However, if City has the intention of selling Haaland, then they will not sell Haaland for less than 200 million. Haaland was probably bought by Manchester City for 60 million. They will be very profitable.
Mbappe is unlikely to stay with PSG. We are yet to hear any news about his contract renewal. And so Luis Enrique will definitely be looking for an experienced striker next season. I think PSG will benefit if he spends 200 million to add Haaland to the squad. Because PSG wants the title, money is not a big factor for them.
In my opinion, this is very difficult to happen, if you look closely Halaand is quite happy at Man City. We know that the EPL is the highest level for professional players, all players dream of being able to experience and play there, especially with Man City coached by Pep Guardiola. The entire squad supports him to always be the top scorer for the club and the league, for the next two or three seasons Halaand will remain at Man City. What PSG can provide can also be done by Man City, these two clubs have good finances. However, Halaand could leave sooner if Pep stops and trains at another club.
For Mbappe, I also don't know for sure about his new contract extension with PSG, I think this is very secretive by PSG management so that it doesn't become a media conversation anymore.