If he comes cheap he's proven to be a better running back than anyone on the roster has currently shown. Again, if he's cheap. That's the key. Getting a good player at far below his value is NEVER a bad thing. If anything, it gives the team a chance to play him, make him look really good, and then trade him midseason to a team that needs him for draft picks. Might not be worth much but getting things on sale is generally a good idea.
Much more a fan of Aaron Jones than CJ Anderson. Don't care how cheap he comes. Our HB's are actually a pretty nice trio as long as they all stay healthy.