New England Patriots tackle Nate Solder, right, battles guard Logan Mankins during a NFL football training camp in Foxborough, Mass., Thursday, Aug. 4, 2011. (AP Photo/Charles Krupa)

New England Patriots owner Robert Kraft, left, shakes hands with tackle Nate Solder during NFL football training camp in Foxborough, Mass., Thursday, Aug. 4, 2011. (AP Photo/Charles Krupa)

New Orleans Saints wide receiver Brandin Cooks (10) pushes off cornerback Patrick Robinson (21) during NFL football training camp in White Sulphur Springs, W. Va., Sunday, July 27, 2014. (AP Photo/Chris Tilley)

Miami Dolphins' Chris Hogan practices during NFL football training camp in Davie, Fla., Tuesday, Aug. 7, 2012. (AP Photo/Alan Diaz)

New England Patriots tight end Rob Gronkowski stretches during an NFL football training camp at the team's facility, in Foxborough, Mass., Thursday, July 29, 2010. (AP Photo/Steven Senne)

New England Patriots tight end Rob Gronkowski (87) makes a reception in front of an Atlanta Falcons linebacker during NFL football training camp in Flowery Branch, Ga., Tuesday, Aug. 17, 2010. (AP Photo/Paul Abell)

New England Patriots tight end Rob Gronkowski (87) works for yards against an Atlanta Falcons linebacker during NFL football training camp in Flowery Branch, Ga., Tuesday, Aug. 17, 2010. (AP Photo/Paul Abell)

Indianapolis Colts tight end Dwayne Allen during practice at the NFL team's football training camp in Anderson, Ind., Tuesday, July 31, 2012. (AP Photo/Michael Conroy)

New England Patriots special teams member Julian Edelman (11) runs back a kick during NFL football training camp at the Patriots' practice facility next to Gillette Stadium in Foxborough, Mass., Saturday morning, August 1, 2009. (AP Photo/Robert E. Klein)

Julian Edelman

New England Patriots wide receiver Julian Edelman (11) stretches during NFL training camp at the Patriots' football facility next to Gillette Stadium in Foxborough, Mass., Sunday, August 16, 2009. (AP Photo/Robert E. Klein)

Dallas Cowboys wide receiver Danny Amendola (18) during NFL football training camp, Tuesday, July 29, 2008, in Oxnard, Calif. (AP Photo/Tony Gutierrez)

Dallas Cowboys wide receiver Danny Amendola (18) during NFL football training camp, Tuesday, July 29, 2008, in Oxnard, Calif. (AP Photo/Tony Gutierrez)

New England Patriots' Matthew Slater makes a catch during team football training camp, Friday, July 25, 2008, in Foxborough, Mass. (AP Photo/Michael Dwyer)

New England Patriots NFL football team's Jimmy Garoppolo (10) talks to the press after a joint training camp with the Washington Redskins in Richmond, Va., Wednesday, Aug. 6, 2014. (AP Photo/Jay Paul)

New England Patriots quarterback Jimmy Garoppolo passes the football as offensive coordinator Josh McDaniels watches at left during an NFL football training camp joint practice of the New England Patriots and the Philadelphia Eagles in Foxborough, Mass., Wednesday, Aug. 13, 2014. (AP Photo/Elise Amendola)

New England Patriots running back James White (28) during an NFL football training camp in Foxborough, Mass., Friday, July 25, 2014. (AP Photo/)

Philadelphia Eagles quarterback Michael Vick, right, hands off the ball to running back Dion Lewis during the NFL football team's training camp at Lehigh University Thursday, July 28, 2011, in Bethlehem, Pa. (AP Photo/Alex Brandon)

Miami Dolphins' Mike Gillisle (35) runs drills during a NFL football minicamp Tuesday, June 11, 2013 at the team’s training facility in Davie, Fla.(AP Photo/J Pat Carter)

Cincinnati Bengals running back Rex Burkhead (33) runs the ball during practice at the NFL football team's training camp, Thursday, July 25, 2013, in Cincinnati. (AP Photo/Al Behrman)

Carolina Panthers' Kony Ealy (94) runs a drill during an NFL football practice at their training camp in Spartanburg, S.C., Thursday, July 31, 2014. (AP Photo/Chuck Burton)

Trey Flowers

New England Patriots rookie linebacker Dont'a Hightower (45) works against another defensive player during practice on the first day of the NFL football team's training camp in Foxborough, Mass., Thursday, July 26, 2012. (AP Photo/Stephan Savoia)

New England Patriots rookie linebacker Dont'a Hightower (45) takes a drink during practice on the first day of training camp at the NFL football team's facility in Foxborough, Mass., Thursday, July 26, 2012. (AP Photo/Stephan Savoia)

New England Patriots corner back Devin McCourty (32) and safety Sergio Brown (38) block wide receiver Buddy Farnham (13) during a special teams drill during NFL football training camp, Sunday, Aug. 1, 2010, in Foxborough, Mass. (AP Photo/Stew Milne)

New England Patriots' Devin McCourty gets ready to cover Randy Moss (81) during a drill at NFL football training camp, Monday, Aug. 2, 2010, in Foxborough, Mass. (AP Photo/Michael Dwyer)

Buffalo Bills' Stephon Gilmore (27) during NFL football training camp in Pittsford, N.Y., Saturday, July 28, 2012. (AP Photo/David Duprey)

Arizona Cardinals'rookie Alan Branch arrives for the first practice of football training camp Sunday, July 29, 2007, in Flagstaff, Ariz. (AP Photo/Matt York)

New York Jets linebacker David Harris talks with a teammate during football training camp in Hempstead, N.Y., Friday, July 27, 2007. (AP Photo Ed Betz)

New Orleans Saints defensive rookie Rob Ninkovich (93) is handed a third helmet to carry by a veteran teammate, Sunday, July 30, 2006, at their football training camp at Millsaps College in Jackson, Miss. As part of the good natured hazing of rookies, the veteran defensive linemen have their rookie counterparts pick up and return to their lockers the helmets and shoulder pads left on the field following practice. (AP Photo/Rogelio V. Solis)

New England Patriots defensive back Malcolm Butler wipes his face with a towel during an NFL football training camp practice at Gillette Stadium, Sunday, July 27, 2014, in Foxborough, Mass. (AP Photo/Steven Senne)

New England Patriots rookie defensive back and first round draft pick Patrick Chung stretches at the start of the afternoon session of NFL training camp at their football facility next to Gillette Stadium in Foxborough, Mass., Friday, July 31, 2009. (AP Photo/Robert E. Klein)

*FILE * New England Patriots special teams coach Brad Seely watches kicker Stephen Gostkowski (3) kicking a ball during the team's summer football camp in Foxborough, Mass. in this July 30, 2006 file photo. Gostkowski was nervous for just the first day of training camp as a rookie kicker with the New England Patriots. That composure paid off when he won the competition to replace Adam Vinatieri. (AP Photo/Chitose Suzuki, File)