Is Jamaal Charles' slow recovery cause for further concern?

How should fantasy players approach the Kansas City backfield with news of Jamaal Charles' slow recovery from knee surgery? AP

Those who already selected Kansas City Chiefs running back Jamaal Charles early in drafts might be panicking about the recent news that he’s behind in his recovery from a torn ACL, but this really isn’t a surprise. In fact, questions about Charles are built into his current rank.