FILE - In this Sept. 14, 2008, file photo, Cincinnati Bengals starting tight end Ben Utecht is taken off the field during an NFL football game against the Tennessee Titans in Cincinnati. There are times when Utecht is with friends talking about old times _ a wedding, perhaps _ and the former NFL tight end can't remember any of it, even after they drag out the photographs to prove it. He had to retire after his fifth concussion and is still feeling the effects.

FILE - In this Dec. 11. 2011 file photo, New Orleans Saints quarterback Chase Daniel (10), runs onto the field before the start of an NFL football game between the Saints and the Tennessee Titans. With Brees staying away from Saints headquarters during protracted contract negotiations, Daniel has been penciled in to take the first-team snaps when New Orleans begins its first offseason practices, known as organized team activities, on Tuesday.

FILE - This Dec. 24, 2011 file photo shows Jacksonville Jaguars running back Maurice Jones-Drew before an NFL football game between the Jaguars and the Tennessee Titans, in Nashville, Tenn. The Jaguars opened summer workouts Tuesday, May 15, 2012, without star Jones-Drew, who is skipping the three weeks of activities.

Tennessee Titans head coach Mike Munchak walks the sideline during an NFL football rookie workout at the Titans' headquarters on Friday, May 11, 2012, in Nashville, Tenn.

Tennessee Titans head coach Mike Munchak talks to reporters after a workout during NFL football rookie minicamp at the team's headquarters on Friday, May 11, 2012 in Nashville, Tenn.

Tennessee Titans head coach Mike Munchak watches from the sideline during NFL football rookie minicamp at the team's headquarters on Friday, May 11, 2012 in Nashville, Tenn.

Tennessee Titans linebacker Zach Brown (55) rushes during NFL football rookie minicamp at the team's headquarters on Friday, May 11, 2012 in Nashville, Tenn.

Tennessee Titans defensive tackle Mike Martin rushes during NFL football rookie minicamp at the team's headquarters on Friday, May 11, 2012, in Nashville, Tenn.

Tennessee Titans defensive tackle Mike Martin rushes during NFL football rookie minicamp at the team's headquarters on Friday, May 11, 2012, in Nashville, Tenn.

Tennessee Titans linebacker Zach Brown (55) rushes during NFL football rookie minicamp at the team's headquarters on Friday, May 11, 2012 in Nashville, Tenn.

Tennessee Titans wide receiver Kendall Wright (13) catches a pass during NFL football rookie minicamp at the team's headquarters on Friday, May 11, 2012, in Nashville, Tenn.

Tennessee Titans wide receiver Kendall Wright (13) catches a pass during NFL football rookie minicamp at the team's headquarters on Friday, May 11, 2012 in Nashville, Tenn.

Wide receiver Kendall Wright (13) catches a pass as receivers coach Dave Ragone looks on during an NFL football rookie workout at Tennessee Titans' headquarters on Friday, May 10, 2012, in Nashville, Tenn.

FOXBORO, MA - FILE: Junior Seau #55 of the New England Patriots stands on the sideline in the fourth quarter against the Tennessee Titans on October 18, 2009 at Gillette Stadium in Foxboro, Massachusetts. According to reports May 2, 2012, Seau, 43, was found dead in his home in Oceanside, California. (Photo by Elsa/Getty Images)

NEW YORK, NY - APRIL 03: The new Tennessee Titans, Chicago Bears and Jacksonville Jaguars jerseys are displayed during the unveiling by Nike as they begin their partnership with the NFL at Steiner Studios on April 3, 2012 in New York City. (Photo by Mike Lawrie/Getty Images)