Neymar will miss half of the season due to injury. PSG provide high wages to Neymar. If a player like Neymar is not with the squad before the crucial match, then the opponent's morale becomes stronger. It is very risky to have such an injured player in the team. So I think PSG's decision to sell Neymar is the right one.
Neymar is an injury player and what gives him injuries is the kind of football he plays. He moves along with the opponents, he will always want to be a king in the opposition half. That is his kind of Samba football. But he is full of energy and will power. Very skillful and precised.
Neymar looks tired of psg and not tired of football. Neymar cannot do without soccer in this life. Psg as a team always has problems in Champions league because of the teams they play. When they player their weak teams in France, and will by high goals, it will look like they played very very well. When they use same energy and come to Champions League, they will be eliminated.
Neymar has discovered that and I think it will be fine if he will try his luck somewhere else. Although Mbappe is almost certain that he will go to Madrid. If it happens and Neymar leaves the club too, can only old Messi carry the club?