We all know that defending Champions League isn't an easy task, if they want to compete at highest level they need to manage players well being, this will help from abstinence of injury as well, most especially on their key players.
PSG is a very good team, but of course defending the title is one of the things that can cause a lot of pressure, in this aspect PSG must act intelligently, Luis Enrique wants to do what he does again, repeat history, he wants PSG to be a very good team and win Ligue 1 and the UCL, they can do it, but it is not easy.
I remember Manchester City when they won the Champions League title for the first time and also won the Premier League title at the same time and in the following season they had a big chance to win the Champions League again for the second time but the reality is not easy for them because the competition in the Champions League is tighter than their own league so I can understand if PSG failed to defend the Champions League title for the second time this season because they also won it last season so they just need to stay in the Champions League and if they can repeat that history by maintaining their good performance then they are truly extraordinary.