A great Captain he was, but Tony Adams shouldn't be near Arsenal in a coaching capacity.
As for Emery, it was inevitable, there were just too many alarming signs in this situation. Not just the results or atrocious level of football, but lack of willingness to adapt: e.g the constant need to play out from the back despite getting caught out every game and without the personnel to play that way. For years we have had a group(s) of players only too willing to shoot themselves in the kneecap, and far from alleviating this collective malaise, Emery augmented it. He implemented none of the verve of his Sevilla side, didn't seem able to get his ideas across and proved to be the wrong man for the task.