Could Sead Kolasinac make the matchday squad for the Sheffield United game on Saturday - and will Lucas Torreira be involved?
Mikel Arteta says the club's medical staff will keep a close eye on both players before a final decision is made.
"The doctors are assessing [Sead] still - he had a normal session yesterday," our head coach said. "He's been in some discomfort, we know this season that he had some little niggles, so we have to assess him and see if we can get him fit for Saturday or he will be out.
"It is something related to his hip, producing some pain in the muscle. He is a tough boy, he wants to train, he wants to play and hopefully he will be available for the weekend.
"It's a very similar situation [with Torreira]. He trained yesterday as well, but still not 100 per cent confident so we will have to wait and see again.
"Hector has been training with us for the past few days, he is looking much sharper, much better," he added. "He needs a little chunk of training sessions before he is ready to compete but he is looking much better."
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