Unai Emery has urged erratic Arsenal to show more consistency as they prepare to face Napoli in the Europa League quarter-finals tonight. Emery's side suffered a blow in their bid to make next season's Champions League when they slumped to a 1-0 defeat at Everton on Sunday.

The Gunners slipped to fifth in the table as a result of their latest dismal away performance, putting their hopes of finishing in the top four in jeopardy. But Arsenal can also book a place in the competition if they win the Europa League, and Emery is determined to ensure his players do not slip up against Napoli.