I don't think PSG will be in totally in the driving seat of making a deal happen, regardless of teams accepting a potential transfer fee, it's still going to be up to the player agree personal terms with the new club before a deal can be completed, I remember vividly the issue be Frenkie De Jong, Barcelona and Man United last summer, Barcelona did everything possible to sanction the deal, both teams reached a transfer fee very early into the transfer window, but Frenkie never wanted a moved to Man United and as such never reached personal terms with Man United hence Barcelona were force to have for another season, so all I can foresee is such scenario playing out between Mbappe and PSG, and PSG theatrics of holding players against their will to remain the club and whatnot is becoming a very evident and consistent issue, while they feel they have all the money lure any player away from their current club, It's probably just going to keep having a negative impact of their chances of get the biggest stars of the game henceforth, especially with their extremely flawed structure of what's expected of a supposedly top football team in Europe.