We are talking about someone who has been doing something for a long time and PSG gave him the biggest contract outside of Saudi Arabia, the biggest amount in all of europe ever, and that meant to Mbappe that he is welcomed the way he is. That dude plays for money and he really plays JUST for money, I bet if he got offered higher amount of money doing something else, he would just go do that.
Real Madrid will consider Kylian Mbappe's attitude before they offer him a contract. Mbappe infuriated PSG with his attitude towards the team, clearly not reflecting anything worthy of being called a mature star player. In his way, I don't think Kylian Mbappe will win the Ballon d'Or during his future career despite playing at Real Madrid.
Last season he played for money else he would not have hesited when it comes to moving to joining Real Madrid he wasn't ready to play but was ready for the big pay and fame the french club gave him.
He has nothing wrong with his attitude, he has the right mentality when it comes to the game but off the pitch he has to work on his ego and not let emotions chime in when he has to make some good decisions concerning his future.
Real Madrid already building around Vini Rodry and the next Striker to be signed I hope that will be Kylian Mbappe.