Arsenal odds-on to overturn Bate deficit
Arsenal are 4-11 to progress from the Europa League last 32 despite losing the first leg of their tie with Bate Borisov 1-0 in Belarus.
The Gunners were a best-priced 4-9 to win the away fixture, with Bate offered at 7-1, but the visitors went behind when Stanislav Dragun nodded in a free-kick moments before the break.
Unai Emery's men failed to find a way back into the game and their misery was compounded when Alexandre Lacazette was shown a straight red for elbowing Aleksandar Filipovic five minutes from time.
Arsenal are 2-11 with Sky Bet to win the reverse match at the Emirates and have seen their outright price drift to 13-2.
BoyleSports rate Chelsea 1-250 to make the last 16 of the competition after goals from Ross Barkley and Olivier Giroud saw them take a 2-1 lead over Malmo in their last-32 contest.
Celtic suffered a huge setback in their European endeavours, losing 2-0 at home to Valencia, who are 16-1 shots for the title.
Napoli are 4-1 with some firms to become the first Italian winners of the Europa League and its predecessor the Uefa Cup since 1999 after they cruised to a 3-1 win away to Zurich.