Leandro Trossard, who limped off the pitch in the Champions League win over Bayern Munich last week, underwent tests on Friday and a minor calf problem was detected. Arteta, however, expects the Belgian winger to be available again in a few days.
On Kai Havertz's condition, who has not played since the opening-day fixture against Manchester United, the Spaniard said: "We are all desperate to have him. I mean, it is a player that, personally, I love so much for what he brings to the team - his character, his personality. I see him suffer, being outside. Matter of weeks; let’s see how it evolves in the next few weeks. He’s doing really well, he’s doing stuff on the pitch, but I think he needs some time."