Alexandre Lacazette has apologised for getting sent off in Arsenal's 1-0 defeat to BATE Borisov on Thursday.
The Gunners suffered a shock defeat in the first leg of their Europa League last-32 tie, with Stanislav Dragun's first-half header enough to give the home side the advantage.
Lacazette, who had a goal disallowed for offside early in the second half, was shown a straight red card five minutes before the end of the clash in Belarus when he threw an elbow at Aleksandar Filipovic.
Unai Emery's team must try to overcome the deficit without the France international when they welcome BATE to north London for the return leg next week.