Buffalo Bills head coach Rex Ryan celebrates a penalty called against the Jacksonville Jaguars during the first half of NFL football game Sunday, Nov. 27, 2016, in Orchard Park, N.Y. (AP Photo/Bill Wippert)

Buffalo Bills head football coach Rex Ryan wears a Clemson college football helmet during a news conference in Orchard Park, N.Y., Tuesday, Nov. 10, 2015. Ryan has a connection to the No. 1 ranked Tigers. His son, Seth, plays receiver for Clemson. And Rex Ryan plans to attend the Tigers' game at Syracuse on Saturday. The Bills will have the weekend off after they play the New York Jets -- Ryan's former team -- on Thursday night. (AP Photo/John Wawrow)

Buffalo Bills head coach Rex Ryan, left, and his brother, assistant head coach Rob Ryan, walk on the field before a preseason NFL football game against the Indianapolis Colts Saturday, Aug. 13, 2016, in Orchard Park, N.Y. (AP Photo/Bill Wippert)

New York Jets Head Coach Rex Ryan celebrates a Jets touchdown with Leger Douzable (78) in action against the Cleveland Browns at Met Life Stadium in East Rutherford, New Jersey December 22,, 2013. (AP Photo/Damian Strohmeyer)

New York Jets head coach Rex Ryan waves his arms as he questions a call from the sidelines against the Kansas City Chiefs during a week nine NFL football game on Sunday, Nov. 2, 2014 in Kansas City, Mo. The Chiefs won the game, 24-10. (AP Photo/G. Newman Lowrance)

Jets head coach Rex Ryan hugs Ravens head coach John Harbaugh after the preseason NFL football game between the Baltimore Ravens and the New York Jets on Monday, Aug. 24, 2009 in Baltimore. Baltimore defeated New York 24-23. (AP Photo/Nick Wass)

New York Jets head coach Rex Ryan, center, reacts near the end of the Jets' 28-21 win over the New England Patriots in NFL divisional playoff football game in Foxborough, Mass., Sunday, Jan. 16, 2011. (AP Photo/Winslow Townson)

New York Jets head coach Rex Ryan reacts to a penalty called against his team late in the fourth in the fourth quarter of their NFL football game against the New England Patriots Monday night, Dec. 6, 2010, in Foxborough, Mass. The Patriots defeated the Jets 45-3. (AP Photo/Stephan Savoia)

FILE - In this Oct. 12, 2010, file photo, New York Jets head coach Rex Ryan celebrates with quarterback Mark Sanchez after Dwight Lowery scored a touchdown during the fourth quarter of an NFL football game against the Minnesota Vikings, in East Rutherford, N.J. Sanchez told GQ magazine for its September issue that he "wanted to fight" Ryan after the coach considered benching him following a poor stretch. The two laughed off the comments after the Jets' 20-16 loss to the Texans in Houston on Monday night, Aug. 15, 2011. (AP Photo/Seth Wenig, File)

FILE - This Jan. 21, 2009, file photo shows Rex Ryan posing with his wife, Michelle, during a news conference to introduce Ryan as the teams new head coach, at the teams training facility in Florham Park, N.J. Ryan says it's a "personal matter" and declined to talk about a "foot-fetish" report posted by the sports website Deadspin that show four videos of a woman who bears an uncanny resemblance to Ryan's wife. (AP Photo/Mike Derer, File)

New York Jets head coach Rex Ryan challenges a call during the second quarter of the NFL football game between the Kansas City Chiefs and the New York Jets, Sunday, Dec. 11, 2011, in East Rutherford, N.J. (AP Photo/Bill Kostroun)

New York Jets head coach Rex Ryan embraces running back Joe McKnight (25) after McKnight ran back a kickoff return for a touchdown during the second half of an NFL football game Monday, Oct. 8, 2012, in East Rutherford, N.J. (AP Photo/Julio Cortez)

Buffalo Bills head coach Rex Ryan, left, talks to side judge Tom Hill (97) during the first half of an NFL football game, Thursday, Nov. 12, 2015, in East Rutherford, N.J. (AP Photo/Seth Wenig)

Baltimore Ravens' defensive coordinator Rex Ryan, left, jokes with his twin brother and the Oakland Raiders defensive coordinator Rob Ryan, right, before the start of an NFL football game, Sunday, Oct. 26, 2008, in Baltimore. The Ravens won 29-10. (AP Photo/Rob Carr)