I think the Mbappe issue is still unknown to the public because Real Madrid was looking for Mbappe last season and they failed to get him, and again this season they also do the same; they start looking for him to replace their weak position, which is the striking position, so I think if Mbappe's contract expires with Real Madrid this season, I don’t think he will renew it; he will want to go back to Real Madrid. The fact that Real Madrid really needs someone like Mbappe to replace their striking position made me think that they will do everything they can to get him during the transfer window.
Unknown? What do you mean?
Mbappe issues already spread anytime since the previous season. Although Real Madrid failed to sign him in the previous transfer window, it doesn't mean that Mbappe has no chance to move to Real Madrid. Moreover, Real Madrid still prioritizes Mbappe as their main target, meanwhile Mbappe still dreams to join Real Madrid. So, public (all people) must understand that Real Madrid has a good chance to sign him.
Mbappe mustn't renew his contract with PSG. If he extends his contract, he may play forever with PSG.