In the Champions League I don't think it makes any difference what their squad will be, nothing depends on it. The Champions League is about endurance and the ability to withstand any opponent, and for that you just need a balanced team with players who work well together and lastly to work on tactics. You can put together a star-studded squad, but it's unlikely to achieve greatness in the Champions League
The UEFA Champions League is a tournament where every one come out to portray their strength. These managers are also competent, they don't relent and show their strength. Luis Enrique is now enlisted in the category of top players, and only the best will fit in. European football is very competitive and only the best team will earn major trophies, you know why? They worked hard for it. In the UEFA Champions League, we have entirely different clubs that compete and only the best will come out succeeding. Paris Saint-Germain was in prime and didn't have to settle for less when they have one good job to deliver. All I can say is watch out for Les Parisiens next season, they still got that fire sparkling.