Raheem Sterling during his first training session for Arsenal earlier today. The Gunners new signing is preparing for his first ever North London Derby.

It seems like there might be a mix-up here—Raheem Sterling is currently a player for Chelsea, not Arsenal. As of my last update, Sterling has not signed with Arsenal. If there have been any recent developments or a transfer involving Raheem Sterling, I can look it up for you to provide the latest information.