Barcelona coach Pep Guardiola sees Ever Banega as Valencia's danger man ahead of tonight's Copa clash.

The tie is in the balance after last week's 1-1 draw in Valencia.

"Banega is a fantastic player. We'll have to be plugged into the game to render Banega ineffective. If they are behind us, Banega won't be as big of an issue, if we're behind them, Banega will be key," said Guardiola.