Barcelona midfielder Javier Mascherano has warned Arsenal that Lionel Messi is ready to end their Champions League dreams for a second time.
Messi scored four goals in last season's demolition of Arsenal at Camp Nou to send Arsene Wenger's side spinning out of Europe.
Former Liverpool star Mascherano believes Messi could be ready to repeat the dose on Tuesday night as Barcelona look to overturn the 2-1 deficit from the first leg.
"Nothing surprises me about Leo," said Mascherano.
"He can repeat what he did last year or he could do even better. Nobody can put a limit on the levels he can reach."
Not stupidMascherano also rejected suggestions that Arsenal will use attack as the best form of defence at Camp Nou.
Argentine ace Mascherano expects Arsenal to employ a defensive approach against Barcelona as they look to defend their lead from the first leg.
"They are not stupid. They have a [2-1] advantage and they will try to protect that lead," added Mascherano.
"They will come to defend. The difference [from Zaragoza] is that, as we know, when they do have the ball they also like to play and they have the players to do that.
"Arsenal know how to defend as well as attack. We can't make the mistake of thinking that, just because they know how to play attacking football, they don't know how to defend.
"In football when a team plays well we all jump to that conclusion. But if Arsenal have to defend, then they will defend.
"The problem is that when they have the ball they will try to play football - because of the players and the coach they have."
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