He won two pots a year ago
You're damn right it's valid when deciding whether to keep him on
It's not a Wenger situation where he went 9 years without winning something
They've already lost five Premier League games in 2015 with a squad which is worth much more than our entire club's total value.
City have been dramatically short in the league, out of the cups in pretty embarrassing fashion and their Europe campaign was lacklustre.
As I've mentioned before, I agree with your sentiment that there is too little loyalty in the higher echelons of football. It's not a perfect situation.
However, with the money they've spent and their requirements then there are certain 'high' expectations which will have been made clear.
If you do not meet a certain criteria then you have to expect the consequences. Citeh aren't Arsenal and neither are we Arsenal.
Add to that there is very little confidence that he is able to manage the changes required, so that'll be the nail in his coffin.