The Carolina Panthers are set to audition former University of Miami defensive lineman Dave Howell on Monday, according to a league source with knowledge of the situation. The National Football Post has been told that the Panthers are going to conduct a major tryout. The Panthers could use definitely some defensive linemen to upgrade their depth. Howell is a fairly obscure, unaccomplished former Hurricanes player who lined up on both sides of the football. He enrolled at Miami as a highly regarded recruit, ranked as the 29th defensive lineman by SuperPrep. Source: National Football Post