So Chamberlain's naivety as regards his defensive duties is reason enough to drop him completely?
Seems that it is in Wenger's mind.
Why then does he accept slackness and lack of application in this area from players such as Arshavin and Theo?
It's not as if the rest of the team have been drilled and made aware of their responsibilities to defend, or if they have been they ignore them.
Will he drop Jenkinson who is actually a defender for the same reasons?
As for Ryo, I'd guess we'll only see him in CC games for the time being.