Mikel Arteta declared Arsenal had sent out a statement after beating 10-man West Ham to climb into the top four for the first time this season.
Goals from Gabriel Martinelli and Emile Smith Rowe saw Arsenal leapfrog Manchester United and the Hammers and move into the final Champions League place.
At the end of August Arsenal were rock-bottom after losing each of their first three games without scoring.
But Arteta has steered them up the league with nine wins and two draws in their fourteen games since and urged his team not to stop at fourth.