Barcelona star Andres Iniesta says they're wary of Chelsea's attack ahead of their Champions League semifinal.

Iniesta also warned of the threat posed by some of Chelsea elder statesmen, such as Didier Drogba and Frank Lampard.

"They are dangerous for who they are, not because they are older or that it could be their last opportunity to win the Champions League. You have to respect them because they are great players and right now are in a very good moment. I think it's going to be a very nice tie," he said.