I've also heard rumors that Kylian Mbappe will leave PSG and sign with another team, but since PSG doesn't want him to leave, I think they'll offer him a lot of money in exchange for extending his contract with the team. If I recall correctly, this happened before when he wanted to leave and they offered to pay him more than he was earning, so he stayed, which led me to believe that Mbappe will still play for PSG this time around because they will offer him alot of money and PSG is a wealthy team they have the resources to make Mbappe stay.
Even before, I thought Real Madrid would sign Mbappe to their team because I believe Mbappe will fit the team, and I also think when we want to talk about some weak positions of Real Madrid for the last season, the position Kareem Benzema left now will be weak the following season, no doubt about that, so I think if Mbappe gets in there, I believe their squad will be more stronger.
If you see the progress of the news about Mbappe then you already have the answer, that is, PSG will sell Mbappe in this transfer window because it has become clear after PSG did not include Mbappe in the names of players who will take part in the pre-season tour. I'm sure Mbappe will go to Real Madrid in this transfer window because for now Mbappe situation with PSG is heating up after he was dropped by the team for a pre-season match.
For that we will see many surprises from Mbappe transfer drama in this transfer window. In fact, we only know that Real Madrid is the leading team to get Mbappe, but maybe that won't happen if other teams are able to make an earlier bid for PSG in recruiting Mbappe. I think that Bayern Munich will join the hunt for Mbappe in this transfer window because they are struggling to get Harry Kane.