I actually predict a 3-2 Barca win - even if they dont play well Messi can do 3 brilliant moves to provide 3 goals and win it for them..
Teams always make the mistake of crapping their trousers when facing dat barcelona trio. And then go defend. Which allows barcelona's weak as shit midfield to run the game.
Wrong.
What PSG is doing, is how it should be done. Be very aggressive and commit a few players forward, they cant close all the gaps with the midfield and the front 3 will be very isolated.
Barcelona will have counters, but you'll just have to find a way to deal with them.
If PSG keeps up this playstyle, they'll end with a great result. If they are gonna sit back more, barcelona will take more controll and will score.