Gunners 18/1 for Champions League
Sky Bet have trimmed Arsenal to 18/1 from 20s for the Champions League after they successfully reached the group stage.
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Arsene Wenger's side weren't at their best against tricky opponents, but eventually beat Besiktas 1-0 on aggregate thanks to an Alexis Sanchez goal in first-half stoppage time.
The Chilean slotted home from close range after Jack Wilshere and Mesut Ozil combined on the edge of the area, at which point Arsenal looked set to earn a place in the main draw with something to spare.
However, Mathieu Debuchy received his marching orders with just over 10 minutes remaining to set up a tense finish before Arsenal advanced for the 17th successive season.
Sky Bet make them third best of the Premier League sides, behind Chelsea (8/1) and Manchester City (11/1) but ahead of Liverpool (25/1).
Bayer Leverkusen also progressed to earn 80/1 quotes while Athletic Bilbao were cut to 50/1 after they eliminated Napoli.