Earlier it was kind of funny, on their daily show Lequipe have reporters from L'Equipe, France Football, RMC and other media, they were discussing about how it is possible that Mbappé managed to keep his decision to himself, apparently there are no leaks, nothing that is confirmed by anyone other than the ones publishing articles basically none of the stories are confirmed whether you are talking about rumours in favor of Real or PSG.
In the end he may have stretched it out to fatten the offers on both sides, as this journalist says(I don't know who is)
I didn't like his mother talking on Twitter at this point and talking about two offers. I understand that he wants to be respectful to PSG but in my opinion so much waiting makes him a bit ridiculous like Griezmann and his decision.