As the season ended, Jerrion Ealy and Snoop Conner each announced they were foregoing their final seasons of eligibility in order to get a jump in their pro football careers.
While neither back is expected to be a high draft pick, the modern NFL yields very short playing careers for running backs. If you want more information on that, James Dator did an awesome piece about running back shelf lives in the context of Christian McCaffrey’s contract extension a few months ago. Suffice it to say, the NFL just values backs differently than it did ten years ago.