Pep Guardiola has warned Barcelona that his team’s win is not done and dusted going into their Copa del Rey match against Cultural Leonesa.

"The first round of the cup is always difficult - Barcelona have fallen on a number of occasions and despite having won away, nothing is done yet," Guardiola told AS.

"I want us to take our duties seriously and do what we have to do. It's the best way to approach a game and move forwards."

Guardiola also believes that Real Madrid could make it past Alcorcon even though they are down 4-0 after the first leg.

"It could happen. They could knock out Alcorcon and Cultural could knock out Barcelona. But Barcelona can eliminate Cultural, and Alcorcon could beat Real Madrid - anything can happen.

"Can Real Madrid [go through]? Yes, of course. They are Real Madrid and they spent more than €200 million, they can eliminate Alcorcon..."