Claudius an alternative view on his leadership qualities would however be that when he wants to leave, Arteta stopped him.
My recollection is that Roma offered us £5m for Xhaka and we decided to persist, so Arteta coached him on playing football in a different position so that his technical deficiencies and average foot speed would be less damaging.
Also someone, maybe even Carlos Cuesta who I recall was specifically praised by Xhaka, did some sort of Vulcan therapy mind-meld on him to convince him to stop taking quite so many pointless red cards.
I don't think there's ever been a time at which Xhaka has been key to Arteta's thinking about leadership in the way that, say, Ødegaard has been.