If he'd done the same to another manager at the beginning of a game, it would have been a major incident - it's not an accident, it's really blatant and it's really unprofessional to behave like that
to me it speaks volumes about the kind of person Arteta is, i.e. a total control freak - I'd already said elsewhere that i bet Trossard is regretting coming to a club where he thought he'd have a fair chance of getting game time, only to find that Arteta has one starting 11 and you're either you're in or you're out
We're not Man Utd, we can't afford a manager who is endlessly freezing out talented players for no reason, but it's exactly what he's doing