Samir Nasri is hopeful that Manchester City can take the victory they need in Barcelona.
City are trailing 2-0 from the first leg and will have to defy history if they want to knock out the Spanish giants.
No team in the Champions League has ever come back after losing the first leg 2-0 at home - but that is what City need to do.
"We have nothing more to lose," Nasri told L'Equipe.
"We have to go out there with the will to attack and put them under pressure.
"Barcelona is a team that likes to keep the ball, but that doesn't like to defend. They are not used to defending. We have chances.
"In the first leg, we put them in more trouble when we were down to ten.
"When they took the lead we had nothing to lose so we decided to put pressure and we could see they lost the ball, kicked away. That is the way we have to play at Camp Nou.
"Look at what Real Sociedad did. With a lot of respect for them, I believe they are not better than us and they won 3-1 against Barcelona. If you play without any fear, uninhibited, you can defeat them. They are just like anyone.
"We defeated Bayern Munich in the group stage and Bayern are stronger than Barcelona. In defence, Barcelona are not so fantastic. With his speed, Kun Aguero will hurt them."