I think they shouldn't rush into the transfer. Mbappe is an important player, but his absence can be filled by a player somehow. Here, PSG observers and technical staff will have to work overtime to choose the best. Mbappe is gone, but the next name will have to look no further. A difficult period begins for PSG. They should select the best player and add them to the team and play better next year to lift the UCL cup, which is their main goal.
Everybody have their reasons why they're supporting Kylian Mbappe, he has tried much more but it's time for the young star to become the best and win the Ballon d'Or. PSG valuable player, Mbappe coming to Real Madrid is winning the UEFA Champions League, no two way about it. PSG will missed him and this might lead to the poor stats of the club next season, perhaps Luis Enrique will definitely make new plans without the Frenchman in the picture. Kylian Mbappe wants what's best for him and Real Madrid is the best decision for him.