So true. And the transfer market is currently only about 3 weeks left before it closes. So PSG must hurry if they want to release Mbappe before the transfer market closes. It's just that speculation circulating is that Mbappe is thought to have had a personal agreement with Real Madrid. So that Mbappe definitely won't want to join another club trying to redeem himself from PSG this season. Because if the speculation circulating is true then of course Mbappe has already made his choice to join Real Madrid next season when he is on a free transfer.
However, it will be very surprising if it turns out that next season Real Madrid is not the club that Mbappe has chosen. There will definitely be a furor in the sports media if this happens next season.
Actually, PSG still has until mid-season to make a decision as we know in every season there will be 2 transfer window sessions if PSG still fail to renew Mbappe's contract then they will have to find a replacement. As you said there is no chance for PSG to keep Mbappe reportedly he has reached a personal agreement with Real Madrid that is why he ignored some good offers one of which was from the Saudi League. I'm curious, if Madrid really used this method to sign Mbappe, is there a chance they will be sanctioned by FIFA?