Unai Emery's dismissal has done little to remove the poisonous atmosphere that continues to engulf the Emirates. Arsenal have won just one of five games under Freddie Ljungberg and their league performance against Manchester City was the worst of the lot.Kevin de Bruyne opened the scoring with an excellent half-volley into the roof of the net from the edge of the box before setting up Raheem Sterling for the second.The England international capitalised on a well-executed counter-attack, De Bruyne waltzing through three Arsenal defenders to find Sterling at the back post.Before half-time, it was three. Matteo Guendouzi was too weak and the Belgian pinged it into the bottom corner.De Bruyne basically had man-of-the-match in the bag within half an hour. He was utterly sublime.This wasn't even City at their very best, but the ease with which they dominated the hosts will have embarrassed Ljungberg and must have left Mikel Arteta, Pep Guardiola's assistant, wondering whether he really wants the top job at his old club after all.Just take a look at their senior players - Pierre-Emerick Aubameyang was non-existent in the first half, three of his eight touches coming from kick-off. Mesut Ozil was also anonymous and he was taken off on the hour mark. The playmaker has had a difficult week, the club distancing them from him after he expressed solidarity with Muslims being persecuted in China. Then, at the end of another poor performance from the former German international, he was hauled off - and he didn't take it well.Just as Martin Tyler was saying "I hope he doesn't react like Xhaka" - obviously a reference to the midfielder telling the fans to "f*** off" against Crystal Palace, Ozil trudged off slowly before throwing his gloves to the floor and kicking out. 

It is a deeply, deeply unhappy camp at Arsenal.