He's a player in his manager's image, he plays OK for a while then has a period when he can't do anything right.
Incidentally I watched the Man City game and low and behold he was partially at fault for the goal.
you realise that the defence was in the middle of readjusting the positions they had been playing in for two thirds of the match? he has stood in fantastically well at right back when needed in games you probably haven't seen and so your opinion is lopsided.
You don't really need to watch avidly to know what's going to happen with Wenger in charge, basically the same thing that happens every year.
You do if you think Kozza has been rubbish all season. That is far from the truth and based on last season. The shape and style of play you see now is totally different from what we are used to seeing.