The Spain international felt his side's victory over Malaga on Thursday could have been by an even greater margin and now has his sights set on yet more silverware
The Catalans beat Malaga 6-4 on aggregate on Thursday night and they will now have to deal with their arch-rivals in the next round.
"We want to win every competition we play in," Busquets told reporters.
"We have to play against Real Madrid in the semi-finals, and we hope to get a good result in the first leg [in Madrid]. And later, here, with our fans cheering us on, we hope to get to the final."
The holding midfielder then reflected on the 4-2 away win over Malaga, and stated that the Blaugrana could have won by an even greater margin.
"The result is fair, in fact we should have won by more," he stated.
"In the first half of the away leg in Barcelona, and today throughout the 90 minutes we could have scored more goals."
Barca resume match action on Sunday when they host Osasuna.