The Gunners are all but assured of passage to the Champions League group phase.
Sagna said: "Getting into the Champions League is so important for the club in terms of moving forward and attracting new players and also for the players and the fans. For many years now we have become used to qualifying for the Champions League.
"We knew it was a big game and that we had to perform and we did it well. It was a great night for Arsenal."
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