Oh for God's sakes, the hell with the old broken down useless running backs whose old teams don't want them anymore. I'd rather release Willis and role into next year with Knowshon, Hillman, and Jeremiah Johnson, and take a shot at landing this years Alfred Morris in the 5th, 6th, or 7th round.
Steven Jackson and/or Michael Turner? Hell with that, you can get just as much or more production than them just looking at our own practice squad. Without spending a ton.