Arteta is already without Kai Havertz due to a muscle injury, while Mikel Merino is also absent following foot surgery, and in a race to be fit again to feature this season, leaving Arsenal short of midfield options.
"Before it was the strikers, then it was the defenders, now it's the midfielders," Arteta continued. "But we are still coping with that, but we need some players back and fit, to give us as well not only numbers but different options in relation to the opponents that we have. So the quicker the better."
Even so, Arteta praise his side's desire against Wigan, who told the official Arsenal website: "It was great. Straight away you could see that things were clicking. Players were really alive, really sharp. And yeah, we caused a lot of damage to them.
"Very happy we are in the next round. That’s what we wanted to achieve and I think the manner that we’ve done it as well, making a lot of changes. But the team showed a real desire first of all, which is the most important thing when you play these kinds of teams in the competition.
"Then cohesion, which normally is not there from the beginning because of the amount of changes that you’ve made. But the team, I think, played with a lot of intensity, great intentions to play forward, to constantly threaten the opposition, and we scored some incredible goals in the first half. That made a difference."