Yeah, I would definitely disagree. Iwobi is the better player, more likely to make the correct decision, far more useful in build-up and ball retention, in short, between Ox and Iwobi for a match like this as a manager I wouldn't even have a decision.
But then Arsène and I don't see eye to eye too often these days.
I'm expecting he'll pick Welbeck, Alexis and a midfield 3 of Ox, Coquelin, Elneny with Özil higher up 'out wide'. Doubt he trusts Xhaka for this game but we'll see.