Espanyol goalkeeper Kiko Casilla has targeted Barcelona's weak points as his side looks to get a result at Camp Nou on Sunday.
Casilla's side have not won away to Barcelona since February 2009, but the goalkeeper believes that they can produce the performance to take something from the game.
"It is, of course, difficult to hurt Barcelona, they are a formidable team and one of the best world, but all teams have a defect," the 28-year-old told the club's official website.
"Although Barcelona have few weaknesses, they must have one and we have to use that to get something positive.
"Winning at the Camp Nou and being a derby, it would be one of the best things that could happen to me."
Espanyol will be looking to move up to 10th, but a result for Barca could possibly see them go top, depending on the final result of Real Madrid's match with Celta Vigo.
