The new Gunners boss isn't going to let positive results distract him from trying to transform the side
Mikel Arteta stressed Arsenal still have plenty of room for improvement after Thursday's 1-0 Europa League win away to Olympiacos.
Alexandre Lacazette's 81st-minute strike earned the Gunners the advantage in their last-32 tie ahead of next week's return at Emirates Stadium.
It was a gritty Arsenal performance, with defenders Shkodran Mustafi and Sokratis Papastathopoulos both needing late treatment at Georgios Karaiskakis Stadium.
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Arsenal are now unbeaten in their past nine games in all competitions, with Arteta happy impressed by his team's mentality in Greece.