I'm sure everyone will say what needs to be said about Giroud, but I'm really concerned about Wilshere's development. I honestly can't remember the last time I saw Wilshere win a shoulder-shoulder contest. He puts in the effort for sure, but he just seems so incredibly weak on the ball and easily pushed off.
If Arteta is injured, maybe that will push Arsene to sign a DM? I hope so, I think we'll get mauled against the big clubs again fielding a team like this, especially since Debuchy's positional sense seems to exist only in the opposition half.