The former four-star recruit spent his 2011 freshman season at Kansas but was then dismissed from the team in 2012. He attended Butler (Kan.) Community College but did not play in any football games.
"Coach Weis has given me a rare opportunity," Miller said. "I get the chance to get this right. I am truly thankful for this opportunity, and I intend to make the most of it."
At Kansas he was second on the team in rushing in 2011 with 559 yards and scored four touchdowns. He'll be a redshirt sophomore in 2013 and rejoins a loaded backfield that features 1,000-yard rusher James Sims plus Tony Pierson (760 yards).