The 5-10, 190-pound Mocksville, N.C. native is listed on the Week 1 depth chart in a two-way tie for second string free safety.
As a true freshman in 2005, Arnold started the season opener and played in all 12 games as a running back. He totaled 187 rushing yards, but was then moved to defense for his sophomore season.
In 2006, Arnold played in all 12 games, seeing significant time at safety and on special teams. He recorded 48 tackles and two forced fumbles.
Wednesday Evening Update: Butch Davis was asked about Arnold's suspension after practice.
"The policies and procedures that we've set forth are in the best interest of the team and the best interest of the individual," Davis. "I spoke with Cooter and told him he had some things he needed to get accomplished and get done and we would revisit it sometime in the near future and give him an opportunity to demonstrate his willingness and desire to get back on the team.