Barcelona boss Luis Enrique has called Copa del Rey final opponents Athletic Bilbao "one of the most difficult sides to play against" in Spanish football.

The two most successful teams in the history of the competition will meet in the final at Camp Nou on Saturday.

Barca will enter as the strong favourites to complete their second leg of a possible treble, but Enrique has warned his team not to take Bilbao lightly.

"It's one of the best games you could possibly play in, for the atmosphere, and because there is a trophy at stake," Enrique told reporters at a press conference.

"Athletic are one of the most difficult sides to play against, they try and take the ball off you and they put you under pressure at all times. We need to be incisive and be aware of moments in the game when we can cause them problems."

Barcelona lost in the 2014 Copa final to Real Madrid.