Luis Enrique is a manager who loves discipline and he knows how to work with players like Neymar. Therefore, he already has a telephone conversation with Neymar and said that he would like to see him in the team. You can understand him, he will now seek to keep most of the team, because it is very difficult to start all over again. PSG is a very strong team and they practically have all the players in order to achieve their goals. Leaving Messi will not be critical, because Mbappe and Neymar remain in the team. Luis Enrique is currently one of the best options that PSG could have chosen.
Luis Enrique even worked with Neymar for three seasons at Barcelona. Neymar was in the Barcelona squad that won the Champions League title in Luis Enrique's management. Therefore yeah he definitely knows how to deal with Neymar. But Neymar's being injury-prone is still a negative side for PSG next season as well.
I don't know if Neymar would leave this summer just as Messi did. If he doesn't I assume he would stay for one last season and no more. Because Neymar has been giving the signals to leave for a long time. At least the news has been stating that for a long time.
If he stays now PSG wouldn't need to work on filling his place as well at least for now.