Bayern is now missing their great goalkeeper, and PSG is not missing anyone unless Messi gets injured for the remainder of the world cup, which means that they will have an advantage.
Bayern may not miss Neuer during bundesliga, but PSG will use their talents to abuse the newer goalkeeper for sure, it will be a better for them without a doubt. I am not saying that we should be expecting them to lose for sure, Bayern could still win, but I see PSG as the favourites for sure, that means betting on them should be easier. Odds will not take Neuers importance all that much, and they will give them close odds, and that is why betting on PSG would be so great.
I don't expect Messi to be injured in the World Cup final where he will need more than a month to recover. Of course, injuries will have an impact on PSG's strength, especially in the attack line because so far the two mainstays of PSG, both Messi and Mbappe, are in their best performance. These two players are competing to become the top scorer or maybe the best player during the World Cup, each of them has scored 5 goals and the number is still likely to increase.
PSG's advantage is to have both of them in attack, which is great. And maybe Mbappe and Messi will clash in the final if France beat Morocco in the semi-finals. I really see Messi having a huge impact on Argentina's game and victory in the current World Cup, and so far Messi has been absolutely amazing.
Sven Ulreich has already appeared in a few of their games, so he will take over. Even in the Bundesliga, Manuel Neuer is still a significant blow to Bayern. This is maybe the moment when another Bundesliga champion will emerge.
There is only one game between them in the World Cup finals, no one is expecting Messi to be hurt. By that time, Neymar will be fine, and PSG will be fully prepared to face Bayern. After Messi and Mbappe played against each other in the World Cup finals, I am curious about their chemistry. There is too much at stake, including their pride and emotions. This is also the final World Cup of Messi.