He has to take it. Good luck to him
if it doesn’t work out he’s most welcome to return
you see that is wrong on both counts
does he really have to take it ? he is wet behind the ears as coach never mind manager, as for city welcoming him back as a coach ?? what about his replacement city have to put in place, its not that simple and really arteta is only going to get one shot at being a manager and it has to be the right club at the right time