Arsenal boss Mikel Arteta insists even captain Pierre-Emerick Aubameyang is not guaranteed a place in his team as he looks to get the Gunners back to winning ways.
Aubameyang has not travelled with the squad for Thursday's Europa League dead-rubber against Dundalk.
Arsenal are already through to the knockout stages and assured of top spot in Group B having won their opening five matches of the campaign.
But it is domestically where Arteta is struggling to find a solution to a poor run of form and a run of lacklustre performances.