We are not sure yet, maybe Mbappe is just doing that to make his team spend more for him and increase his salary. Right now are see much news about PSG wanting to increase the salary of Mbappe and keep him in the team for the next season. That's why they did it the last time and it's not surprising to see the same story.
It seems to me that Mbappe and his entourage have already crossed some boundaries in this game, and therefore I still weakly believe that this is a finely planned strategy to increase the salary of a football player. Rather, here we are dealing with a classic case when the situation has got out of control and is already developing not according to a pre-planned scenario. Moreover, the sheikhs from Saudi Arabia, with their space proposals, brought even more uncertainty into the situation and generally confused the cards of Mbappe's entourage.
I think football is facing a big problem now. Incredible contract prices. If Saudi Arabia continues with these offers, there will be a great decrease in the number of football players to play in Europe. In the Saudi Arabian league, it is unclear how long these offers of the teams will last. Players in the Saudi Arabian league will leave after a few years, but the financial losses will not be easily compensated. This is also a bad situation for Saudi Arabia.