You may be right, that was one of Luis Enrique's statements some time ago. Kylian Mbappe is a great striker, he can contribute a lot to the team with the quality he has, but in the end PSG will probably face the fact that Kylian Mbappe will leave after this season is finished. However, considering that this is a good season for Luis Enrique, Mbappe will likely be relied on heavily in the Champions League and Enrique hopes he can give his best.
Barcelona may need to realize that PSG has great strength in its squad. They have many players with fast playing characteristics such as Mbappe, Dembele and several others, so this will be a tough job for Barcelona's midfield and defense. Xavi also has a knack for building a team mentality, even if he has to rely on several young players in his squad. I'm not saying Barcelona is the favorite, but Barcelona can win this match if they play with a fighting spirit and high motivation to win.
Looking drawing quarter final schedule its opportunity for PSG qualifying to final round if can beat Barcelona they will face not difficult opponent teams the winner between Atletico Madrid or Dortmund. Luis Henrique has huge expectation with Kylian Mbappe and looking his goals productivities this season will be most danger players have to defend by Barcelona in first and second leg match. Barcelona has weakness with faster counter attack and some of their defend not ready when the opponent teams build up faster attack, its great opportunity for PSG by depending Mbappe and Dembele will give chance for winning in the first and second legs matches.
But Barcelona currently had good performance, its not easy for stopping most attractive games play from Xavi Hernandez with more dominance ball possession, I think its interested match between PSG vs Barcelona.