1) Havertz has to decide on his best position
The German international has played in all sorts of roles during his career, having played 144 times as an attacking midfielder, 79 times as a striker, 52 times as a right winger and 21 times in central midfield.
Havertz’s adaptability does make him a very useful player to have in your squad, but it has never been clear what his best position actually is.
Gunners boss Mikel Arteta seems to believe that he is better suited to playing in central midfield but, based on the evidence of his early season performances, that may not be the case.
Havertz is 24 years of age, and he should know himself where he performs at his best. The midfielder must tell Arteta where he wants to play.