I've been reading some stuff about how will PSG fans react when Messi will comeback to train for PSG as that is something I'm looking forward to watch and see how pressure will evolve further. With Martinez doing a lot of crazy stuff about Mbappe and kinda trolling him , I don't think Messi comeback will be cheered in Paris but also I don't think Mbappe will look on Messi as he did before this final. Overall , I think only the fans will be lousy for some time and then if PSG wins UCL , I'm sure everything will be forgive haha.
I think most times we shouldn't give much attention to paper talk because they can make minor issues look so big and real in order for them to make some gain out of it especially in the case were you have football stars and other celebrities. The return of Messi to PSG for training is going to be special because a lot of people especially his fans will be so delighted to see him back in training camp after his heroic performance in the world cup that gave his country Argentina the world cup trophy, not just the coming back of Messi but Mbappe and all the stars that performed well in the world cup but the issues involving Argentina goalkeeper and Mbappe I think is a mere talk because the world cup is over everyone is going to move on regardless of all their encounters. Messi and Mbappe made a spectacular performance during the world cup and I think they deserve nothing but a warm welcome because they are wonderful.
Is it possible that professional players and clubs cannot accept defeat, so that it may be difficult for Messi to be well received for beating France in the World Cup final. I don't think this will happen because after all, it is normal for it to happen and it has often happened in the past too and they are still good. However, considering that Mbappe has special privileges at PSG, chaos or disagreements can occur, because Mbappe himself is basically young and still has an unstable attitude.
But I'm sure they will still be fine in the team, because they also still have the main goal of winning the Champions League title.
So yes, as a professional player and club, of course they will continue to maintain good chemistry, because the celebrations are also over and of course they have a good way to act as friends in the team, it is no longer about competition at the World Cup yesterday.
After all, PSG players have played very well in the World Cup, so this should at least make PSG's performance even better and can promise to go further in the Champions League.