PSG offered Mbappe a contract extension but Mbappe rejected the offer I heard such news. If Mbappe has extended his contract with PSG until 2025, why is he fighting with PSG? When Mbappe decided to leave the club as a free agent next season at the start of the transfer market, PSG offered him either to leave PSG before the end of the contract or to extend his contract, but he did neither, he told the club. Given that he will only leave the club as a free agent member. Extending the contract until 2025 means the club will now have to pay a fixed transfer fee to whichever club he moves to. If Mbappe really wanted to leave the club, he should have left the club earlier this season.
Kylian Mbappe have final dedicate not extend contract with PSG will over next season, actually PSG have tried to sell him for Saudi Pro League teams but Mbappe rejected with that offer and want to stay until his contract over. I don't get rumor with Mbappe agree for extending contract until 2025 with PSG, next season will be free agent but PSG have last opportunity in January transfer window for accepting any offer from top European teams want to sign Mbappe, if can't reach deal agreement on next January transfer window actually Mbappe will be free agent next season and easily for joining which one team he wants.
Summer window transfer have closed and not chance yet for selling Mbappe in this time except waiting on January window transfer will open again, but difficult for PSG selling Mbappe with expensive transfer fee because his contract left few months later.