"What we did last season is behind us now," he told arsenal.com. "We want to achieve something better than that.
"If you want to go further that really means to win it. Once you go past the Quarter-Final you only have the Semi-Final and Final so you have a lot of chance to win it.
"We have not lost a lot of players. We have only lost (Alex) Hleb and (Mathieu) Flamini but we have changed them. Nasri and Denilson have come in and are both playing good football."