So Bayern Munich is the team that is most ready in the near future to carry out a Champions League match and they have no problems with their players.
The opponent of Bayern in Champions League is PSG, a strong team. Bayern Munich with a defeat of Germany in World Cup, will have advantage as their players will have two more weeks than PSG star players to recharge their energy. In addition, with knock-out matches PSG might face with some injuries from their players. If they get some injured players, they will have one more disadvantage when playing against Bayern.
The positive side of Germany coming back in the World Cup is for Bayern Munich, but still it will be a big disappointment for the players. If the Bayern Munich players who are competing in the World Cup cannot awaken their mentality over Germany's elimination, then it will affect them at Bayern Munich. But I hope that doesn't happen and they can restore their morale quickly, especially when the team they will face is another strong team.