The Panthers made room for Harris on their 80-man roster Saturday by waiving injured offensive lineman Steve Justice.
Harris was the Bills' fifth-round draft pick in 2009 and played in 15 games last season. The former Oklahoma safety was waived in July after failing his physical because of injury.
Justice, a center out of Wake Forest, was far down the depth chart and missed practice Saturday morning because of a sore back.
Copyright 2010 by The Associated Press