If Clark gets games starting at half back in the AFL I’ll be hella surprised.It's a sign that he has neither the body strength or the endurance to play his primary clearance role yet so they are trying to find another role where they can still get some afl games into him while he builds his tank. Wouldn't read much more into it than that (unless you think he will be constable and never build the tank but his fitness work this off season looks promising).