"Messi is as awesome as ever," he said to reporters on Monday.
"Barcelona are the overwhelming favourites in the league, in the Champions League and in the cup.
"I don't think we want to go looking for revenge, but it's a special match because we play again against a powerful team.
"Two years ago it was very unpleasant, one of the toughest days, without a doubt.
"But since then we have had matches against Barcelona in which we have competed."