You shouldn't see the two games he played as something to judge his performance and making it look like he isn't going to be at his best. Let's get something right about some of these new players, coming to a new club knowing that the expectations would be high it becomes a problem to blend in immediately for some players because that's what the fans want but some players just have to wait for the right moment before they start showing their full potential.
You are right that he struggled in the Villarreal game but no one said anything about how Arteta made the substitution and bringing in players who are to supply the striker the ball, after bringing these guys in he removed Viktor Gyökeres and that's where we should be asking, what is going on with the manager? Arteta has a plan but until the season begins we ain't going to know what he has in store for the fans so let's watch and see how the main event would look like.