Barca are still smarting from their Supercopa defeat to Athletic Club earlier this season.
Mingueza told Mundo Deportivo: "We know that Athletic is a very powerful team, with fast and strong players. A very complete rival. We have played several times and it has always made things difficult for us, but we will try to play our game.
"It is a 'thorn' that stuck in us (defeat in the Supercopa), but we will try to get it out by winning this Copa.
"They have very good players and they can hurt us both on the inside and on the wings, with very powerful full-backs. They are doing well in the air, behind the back… It is a very complete team and we will have to be very attentive."