Sterling, who has made just 11 appearances since joining on loan from Chelsea, may have been selected as his direct replacement, but Arteta has revealed that he is also unavailable.
"He’s gonna be out for weeks I believe." Arteta said of Sterling. "He needs further testing tomorrow to understand the extent of his injury. It’s his knee. We have to wait and see another 24 hours. Unfortunately he’s gonna be out for a while."
Asked about how he will reorganise his team to cover for the absences, Arteta told reporters: "I am putting some ideas together. I haven’t got there yet. But I have a few. Then I want to speak with them as well to understand how we are going to generate that and take it in a positive way. Because that is going to mean we are going to be different. We went through the period with Martin, the period with five or six defenders missing, the period without many other players. We will continue to do that, finding ways and taking it with positive energy."