I'd also add that I think we have made clear progress season on season under Arteta - I accept everyone's mileage on that statement will vary, but it's where I am. Whilst I wouldn't be comfortable with saying Arteta can write his own cheques for the next five years, trophies or not, nor would I be comfortable with sacking off the progress he has made just because we haven't won the Premier League in this particular era.
It'd be a bit like Andy Murray turning it in just because he played in the same era as Federer, Djokovic & Nadal.