As usual, the three-day camp includes a mix of draft picks, undrafted free-agent signings and about 40 tryout players.
Most of the tryouts are undrafted rookies, but there's also a smattering of experienced NFL vets, including defensive lineman Bowers, tight end Coffman, receiver Josh Morgan and guards Paul McQuistan and Uche Nwaneri.
Bowers, 25, was a first-team All-American and Bronko Nagurski trophy winner at Clemson. And for a while in early 2011, he was being discussed as the possible No. 1 pick in the draft. But he fell to the Tampa Bay Buccaneers in Round 2 because of concerns over a knee injury, and he never really panned out with just seven sacks and 10 starts over four years. A torn Achilles tendon in the 2012 offseason didn't help.
Coffman's career has been even less remarkable after he was one of the most prolific tight ends in college football history and a third-round draft pick of the Cincinnati Bengals in 2009. A first-team All American and John Mackey Award winner at Missouri, Coffman was a go-to guy for former Saints quarterback Chase Daniel in college. But the 28-year-old has only 10 career catches for 106 yards and a touchdown in six years spent with the Bengals, Buccaneers, Atlanta Falcons and Tennessee Titans.
McQuistan, 32, is the twin brother of Pat McQuistan, who spent one season as a backup lineman for the Saints in 2011. Paul has spent nine years with the Oakland Raiders, Jacksonville Jaguars, the Cleveland Browns (twice) and the Seattle Seahawks, where he was a regular starter from 2011-2013.
Nwaneri, 31, was a starter for six years with the Jaguars before failing to latch on with the Dallas Cowboys last year.
Among the notable rookie tryouts are two quarterbacks (Tennessee's Justin Worley and Hawaii's Taylor Graham) and Colorado State receiver Charles Lovett -- a target of new Saints QB Garrett Grayson in college.
All practices are closed to the fans and the media, though players will be available for interviews Saturday afternoon.