The rumors are true and I think we all know Mbappe is going to leave PSg because the PSG owner is not even trying hard to keep this player in the team anymore.
Teams like Real Madrid are also waiting for a chance to hire Mbappe and they were waiting since the previous season for this moment.
I don't think Mbappe will agree to an offer from Real Madrid this season. He wanted to stay with PSG even though the PSG management was furious with Mbappe behavior for not wanting to renew his contract. Well, some Manchester United rumors are also associated with Mbappe. I think Mbappe is more interested in choosing to accept an offer from Manchester United. We will see the future speculation in the transfer window this season because for now PSG relationship with Mbappe is on the verge of breaking up after refusing to sign a new contract or he will be released in this transfer window.
But I don't agree with you and I think since he rejected the offer from PSG to extend his contract he obviously wants to leave his team soon and there is not any interest from his side to stay in PSG and the PSG owner knows that. They also know Mbappe got many worthy offers from other teams. That's why they will sell Mbappe to earn some money from selling him instead of keeping this player in a team he doesn't want to be in.
The smartest move from Mbappe can be accepting the offer from Real Madrid with way PSG can have some benefits too. Also, he will join a team where he can have more chances to earn more better achievements there.