I assume it is difficult to know which team to qualify to the next round. PSG has strong strikers, they potentially make Real Madrid only focus on defending. If it happens, PSG will be easy to create many goal attempts. While Real Madrid players are under pressure and hard to create the chances to score. If Real Madrid wants to win the match, they must win the ball possession and control the match. Benzema, Vinicius, or Asensio also must play effectively and show their accuracy in shooting.
It is naive to assume that Real will play defensively in this pair and will give PSG a lot of chances to score. Real Madrid have one of the strongest middle lines and PSG will not be able to dominate in order for their strikers to feel at ease. Even if Neymar fully recovers to this confrontation, I think that Real will at least have no worse chances than PSG.
In the game, I believe Mbappe's he will try to do everything he can do to make Real Madrid buy him. Real already has an amazing coach and they play as a team on the other hand, although PSG have a good team, they most times are playing individual not as a team. I’d suggest that the coach improve on his tactics for them to be able to beat Real.