Athletic Bilbao coach Ernesto Valverde says they'll need a "miracle" to beat Barcelona in the Copa del Rey final.

Valverde accepts they're rank outsiders for the game.

"When we found out where the final would be, we had an idea of how big the challenge is. Barça are used to its space, they've picked up 49 points at home and 45 away. If we manage to win the prize is even greater. The feeling of success magnified. It won't be easy for them or for us, we need to focus on the ground being more behind us.

"Winning a trophy with Athletic has nothing in common with other clubs who are more accustomed to it. People from Bilbao know what a trophy would mean for Athletic."