Barcelona have the advantage because they beat Benfica 1-0 in the first leg.I think Barcelona will not lose in this home game.Barcelona will be the one to go through.
Liverpool had a good chance in the first match and managed to win with a goal in the last minute.This time things may be different because PSG was really dominant in the first match and wasted many positions.So if they can show the same game again, they may have a chance to pass the round away.
Barcelona will win this second leg, if their coach will use talented players to start this game because they need to beat their opponent to prepare for next stage that will make people to rate them among the team may likely win the UEFA champion league trophy. I guess Barcelona will end this game 3:1 to secure victory, but no matter how prepare Barcelona will prepare in this game, they will not stop Benfica not to score goal from this game because they performance well in their first leg which it will give them hope to double up their effort to secure goal.
If Liverpool win this game today, many people will conclude that Liverpool will be the team to lift this UEFA champion league trophy, I don't think I will miss this game, I will like to watch how PSG will disgrace Liverpool in this second leg because they will play Liverpool until they win the game.