Harris started eight games last season and had 73 tackles, two interceptions, a sack and a fumble recovery. He also scored a touchdown on special teams.
"As a coach this is one of the hardest things you are faced with," Florida coach Jim McElwain said in a statement. "... It is tough to see a player invest so much in himself and his teammates and have this happen, but I do know that we will support him every step of the way as he works through this injury."