I would not sign a free agent...First off I think Jax is better than any known free agent rb mainly because the guy is our emotional leader
But if he have to consider him leaving you got to give the ball to a young guy Richardson pead and Gannaway can start the season as the RB committee but im with sosa and tholtfan Marcus Lattimore can be the next arian foster (however he wont be undrafted)
Foster never suffered two devastating knee injuries like Lattimore did. I'd take a chance on Lattimore, if he's undrafted, but in no way should he be our #1 option to replace Jackson.
There are way too many good running backs who aren't coming off devastating knee injuries.
Personally I like Stepfan Taylor.