The problem is we don't know what Mbappe wants yet is he really chasing money? if yes then Al Hilal is the solution but what if he pursues a career? obviously Real Madrid is the solution, in general all top players will pursue career first then money therefore I doubt if Mbappe will choose Al Hilal. I'm not a Mbappe fan so it doesn't matter to me wherever he plays it's just that I'm interested in following this drama, I wonder if talented young players prefer money over career. If he was me then I would choose a career then at the end of the career I would make money
If Mbappe and PSG both want to earn more money and earning money is the first priority for them, the solution for them is to accept the deal they can have from Al Hilal this way both will earn more, and all know, no team in the Europa will even offer them this huge amount of money. PSG can use the money to easily hire another forward to fill Mbappe's place.