Mbappe was the backbone of PSG and we thought the club would lose its grip on the French league after he left. But the team is now more coordinated and not built around an individual. But the real test of their quality will be in the UEFA Champions League when they battle top clubs. The current league style has even made the Champion League more difficult to win. But we will wait to see how Luis Enrique will be able to break the jinx this season. The main test is not a game against Brest but Girona. Brest have won just a game and lost two. I am predicting an easy win for PSG.
One of the reasons why PSG have struggled to win the Champions League is because they rely too much on one player as the force that will bring them success. Mbappe cannot give anything or achieve an individual career if he is not helped by other players and having three star players in the team also does not give satisfactory results when they play in the Champions League. Luis Enrique's presence makes a difference as he tries to improve the quality of the players to play collectively so that they are much stronger.
Losing a player like Mbappe does affect the front line a bit, but the coach can try to play other players to fill the void. Luis Enrique's task is indeed very difficult because he has to bring PSG to success in the Champions League and for the competition in Ligue 1, I think PSG will continue to dominate other teams.