Thursday's other game saw Real Sociedad recover from Monday's 5-1 thrashing in Villarreal to win 1-0 in the El Madrigal Stadium and book their quarterfinal place.
Javi Ros' first half goal, which came from an offside position was enough to see the side from San Sebastian through and they have a great chance of making the last four as they face third tier Racing Santander in the next round.
The full draw for the quarterfinals is as follows:
Athletic Madrid vs Athletic Club Bilbao, Racing Santander vs Real Sociedad, Levante vs FC Barcelona, Espanyol vs Real Madrid.