Chicago Bears wide receiver Brandon Marshall, right, catches a pass as defensive back Tim Jennings defends during NFL football practice, Wednesday, May 23 2012, in Lake Forest, Ill.

Chicago Bears quarterback Jay Cutler, left, talks with quarterback coach Jeremy Bates during NFL football practice, Wednesday, May 23 2012, in Lake Forest, Ill.

Chicago Bears quarterback Jay Cutler puts on his helmet during an NFL football organized team activity, Wednesday, May 23, 2012, in Lake Forest, Ill.

Chicago Bears quarterback Jay Cutler, left, throws a pass to wide receiver Brandon Marshall, as quarterback Josh McCown, (12) watches during NFL football practice, Wednesday, May 23 2012, in Lake Forest, Ill.

Chicago Bears offensive coordinator Mike Tice, left, watches quarterback Jay Cutler (6) during an NFL football organized team activity, Wednesday, May 23, 2012, in Lake Forest, Ill.

Chicago Bears quarterback Jay Cutler passes during NFL football practice, Wednesday, May 23 2012, in Lake Forest, Ill.

Chicago Bears quarterback Jay Cutler, left, talks with head coach Lovie Smith during an NFL football organized team activity, Wednesday, May 23 2012, in Lake Forest, Ill.

Chicago Bears quarterback Jay Cutler, left, talks with wide receiver Brandon Marshall during an NFL football organized team activity, Wednesday, May 23 2012, in Lake Forest, Ill.

Chicago Bears wide receiver Johnny Knox talks with reporters after NFL football practice, Wednesday, May 23 2012, in Lake Forest, Ill.

Chicago Bears quarterback Jay Cutler talks with reporters after an NFL organized team activity, Wednesday, May 23 2012, in Lake Forest, Ill.

FILE - This Nov. 3, 1986 file photo shows Chicago Bears' Dan Hampton (99), Mike Singletary (50) , Steve McMichael and Richard Dent (95) all moving in to bring down Los Angeles Rams' running back Eric Dickerson during an NFL game in Chicago. Dickerson is the latest former player to sue the National Football League and seek compensation for head injuries. Dickerson is the lead plaintiff among 15 men named in the suit filed Monday, May 21, 2012, in federal court in Houston.

FILE - In this Sept. 25, 2011, file photo, Green Bay Packers tight end Tom Crabtree watches from the bench in the second half of an NFL football game against the Chicago Bears in Chicago. In recent interviews with 40 players _ 13 rookies, 17 active veterans and 10 former NFL players _ The Associated Press heard growing worry about the physical and emotional toll professional football takes. The 43-year old former NFL linebacker Junior Seau's suicide at his oceanfront home on May 2, 2012, resonated across the age groups, with more than half of each saying that particular event pushed them to ponder their future in the sport or the difficulties of adjusting to a new daily life after leaving the league.

FILE - In this Nov. 14, 2010, file photo, Minnesota Vikings wide receiver Greg Camarillo appears in the first half of an NFL football game against the Chicago Bears in Chicago. In recent interviews with 40 players _ 13 rookies, 17 active veterans and 10 former NFL players _ The Associated Press heard growing worry about the physical and emotional toll professional football takes. The 43-year old former NFL linebacker Junior Seau's suicide at his oceanfront home on May 2, 2012, resonated across the age groups, with more than half of each saying that particular event pushed them to ponder their future in the sport or the difficulties of adjusting to a new daily life after leaving the league.

FILE - In this May 12, 2012, file photo, Chicago Bears safety Brandon Hardin works on the field during NFL football rookie minicamp in Lake Forest, Ill. The Bears agreed on Tuesday, May 15, 2012, to a four-year deal with Hardin and now have all their draft picks under contract. A third-round pick out of Oregon State, Hardin missed the 2011 season due to a broken shoulder. Terms were not disclosed.

Chicago Bears drafted players, undrafted free agents and workout players practice together during the NFL football team's rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.

Chicago Bears defensive line Shea McClellin (99) works with coaching staff during the NFL football team's rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.

Chicago Bears general manager Phil Emery watches players during the NFL football team's rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.

Chicago Bears drafted players, undrafted free agents and workout players watch teammates during the NFL team's football rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.

Chicago Bears wide receiver Alshon Jeffery, left, and cornerback Isaiah Frey (31) watch a ball during the NFL team's football rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.

Chicago Bears safety Brandon Hardin (35) wipes his face after drinking water during the NFL team's football rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.

Chicago Bears defensive lineman Shea McClellin (99) returns to the field after getting a drink of water during the NFL football team's rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.

Chicago Bears cornerback Greg McCoy (39) intercepts a ball in front of tryout wide receiver David Mosley (19) during the NFL football team's rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.

Chicago Bears undrafted free agent wide receiver Terriun Crump, left, catches a ball against cornerback Greg McCoy during the NFL football team's rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.

Chicago Bears wide receiver Alshon Jeffery, left, and cornerback Isaiah Frey (31) watch a ball during the NFL team's football rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.

Chicago Bears wide receiver Alshon Jeffery (17), left, catches a ball against cornerback Isaiah Frey during the NFL team's football rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.

Chicago Bears tryout wide receiver David Mosley catches a ball during the NFL football team's rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.

Chicago Bears tight end Evan Rodriguez (88) throws during the NFL team's football rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.

Chicago Bears wide receiver Alshon Jeffery (17) catches a ball during the NFL team's football rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.

Chicago Bears defensive coordinator/assistant head coach Rod Marinelli points as he talks to players during the NFL team's football rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.

Chicago Bears coach Lovie Smith watches players during the NFL football team's rookie minicamp in Lake Forest, Ill., Sunday, May 13, 2012.