"If we play at our level, we will have a lot of chances," the right-back told UEFA.com. "We have spectacular players, so I don't think this tie will be decided until the referee blows the final whistle.
"The desire to enjoy this is very great, and great challenges are there for great teams. Let's see where we stand at the end – if we really are the team that's respected all over the world, or if we cannot reach that level. We're very confident in our team and the players we have."
Barcelona warmed up for Tuesday's game with a 2-0 home win against Deportivo La Coruna in La Liga on Saturday.