Gerard Pique has insisted Barcelona can overcome the 2-0 first-leg loss to AC Milan and reach the UEFA Champions League quarter-finals on Tuesday.
"We have one of the best teams in the history of this club and we know our qualities," said the defender. "I have no doubt that despite the criticism of recent weeks this team is going to respond tomorrow."
Barcelona are running away with the Spanish league title, holding a 13-point lead, but have been off form over recent weeks. Aside from the Milan defeat, they lost twice to Real Madrid.
"Perhaps we played three not very good games, but we are having a brilliant season," said Pique. "Yes, we're going to play against an Italian team that will try to close things down. But the chances will come, I am sure.
"A single goal by Milan would hurt us a lot. We will try not to let one in. But this [Barcelona] team is capable of scoring four. It will be difficult, but it is possible."
Acting Barcelona coach Jordi Roura said his troops were ready to "revolutionise" their tactics.
"We shall have to see how the match progresses," he explained. "If we get to a point where we have to execute a tactical revolution then we shall do so."
Roura said he had been pondering strategy and his best line-up, but insisted he had more or less decided on his game plan without giving anything further away. He also expressed his optimism that midfielder Xavi would be fit despite fears he might miss out owing to a thigh injury.
Roura said: "He is doing very well, but we shall have to wait for the final training session (on Tuesday) to make a final decision."