PSG believe that Mbappe has already reached a verbal agreement with Real Madrid for a free transfer. PSG are at the point of no return about Mbappe's future now seemingly. They waited for an answer from Mbappe about what he is going to do with his future and there has been no answer. From now on PSG have decided to do the sensible thing they should do. They are open to hear about any kind of formula from other teams for Mbappe from now on. The main goal is to not send him for free now.
However I don't believe Real Madrid will make an offer this summer as long as there is none from others. PSG had better hope for other rich teams to intervene and fire up the race for Mbappe.
It seems a loss for PSG if they continue to defend Mbappe while Real Madrid are still waiting for next season for free, now PSG must be more open whoever has a high offer this summer then just sell Mbappe because there is no hope anymore while Real Madrid will not buy at a high price, I am sure with this statement from PSG there must be more offers that previously also Liverpool were rumored to want Mbappe.
Now that Mbappe is excluded from the pre-season tour to Japan in the aftermath of no agreement with PSG management, it would be more appropriate for Al Khelaifi to immediately announce that Mbappe is SOLD this transfer window.