Speaking to Sky Sports after the game, Arteta said of Odegaard and Saka's injuries: "Martin looks like a shoulder issue so we will have to scan tomorrow and understand how bad it is. And Bukayo had to come off after sprinting and when he was wrestling with the defender he felt something in his hamstring, I think. It is the other side [to Saka's previous hamstring injury] but it is still not good.
"I don't know [how long they will be out for]. We already lost Kai [Havertz] who is a big player for us and now Bukayo and Martin. That is why the squad has to be well-equipped. It is going to be a long season and we are going to need a lot of players in order to achieve what we want."