Iowa head coach Kirk Ferentz said "I can envision them both playing next year," when asked about incoming freshman running backs Greg Garmon and Barkley Hill.
The Hawkeyes' roster currently boasts two tailbacks who have a combined 28 carries in their careers, so it's obvious to see the opportunity for the rookies. Garmon is the more highly regarded, and you can tell from the poll in the linked article what Iowa fans expect from the four-star recruit. He's a nice dynasty pick, and worth a gamble late in redraft leagues.