Barcelona fullback Jordi Alba has confessed to teammate Gerard Pique he's unsure if they will win the Copa del Rey final.

Barca are to meet Athletic Bilbao in this season's final later this month.

And Cuatro picked up a conversation between Alba and Pique after Barca's defeat at Real Madrid on Saturday discussing the tie.

Pique sid to Alba: "Relax, we will win [the cup final]."

Alba replied: "I don't know, eh."

Pique didn't seem to hear him and said "What?" to which Alba replied again: "I don't know [if we will win it]."

But Pique insisted: "Relax, we will win it."

Alba's doubts could stem from the Spanish Supercopa defeat to Athletic in January, at the same La Caruja stadium in Seville.