Yeah, definitely there is only one man that can do something for PSG to win otherwise there are a few more chances for Barcelona to win the match. Because Barcelona are much better than PSG in terms of tactics, players etc. Xavi have also improved his performance, like his defensive point, which was quite poor at the beginning of the season.
 
But anyway this is a UEFA champions league competition, so it is not easy to predict who will dominate the match. But I would go for Barcelona because I am a Barcelona fan I would love to see a Barcelona victory.
 
In addition, let's talk about matches. The first leg will be played at Parc de Princes, which is PSG home while PSG have big advantage. PSG have some injuries like P. Kimpembe, Marquinhos, and M. Asensio, which is badass for Paris. Which is on the other side? Barcelona's key players have already gotten injuries like F. de Jong, Pedri and A. Balde. Barcelona will have a little bit more problems in midfielder areas because crucial players are missing out but anyway let's see what happens next on April 11.