Unai Emery is not used to losing in the Europa League, but the Arsenal manager must summon a response from his team if they are to overturn a shock 3-1 defeat in the first leg of their last 16 tie with Rennes and remain in the hunt for a trophy in his first season with the Gunners.
Emery won three consecutive Europa League titles with Sevilla between 2014 and 2016 and winning the competition once more would guarantee Arsenal a much-needed return to the Champions League next season after a two-year absence.