Buffalo Bills tight end Charles Clay (85) is hit by Houston Texans defensive back Justin Reid (20) after a catch during the first quarter of an NFL football game, Sunday, Oct. 14, 2018, in Houston.

Buffalo Bills tight end Charles Clay (85) during an NFL regular season football game against the Los Angeles Chargers on Sunday, Nov. 19, 2017 in Carson, Calif.

Buffalo Bills tight end Charles Clay rushes the ball in the first half of a preseason NFL football game against the Baltimore Ravens, Saturday, Aug. 26, 2017, in Baltimore.

Buffalo Bills tight end Charles Clay falls back after making a touchdown catch on a pass from Tyrod Taylor, not pictured, during the second half of an NFL football game against the Denver Broncos, Sunday, Sept. 24, 2017, in Orchard Park, N.Y.

Buffalo Bills tight end Charles Clay (85) avoids Miami Dolphins outside linebacker Kiko Alonso (47) during the first half of an NFL football game, Sunday, Dec. 30, 2018, in Orchard Park, N.Y.

Miami Dolphins fullback Charles Clay (31) runs into the end zone for a touchdown as New England Patriots defensive back James Ihedigbo (44) chases from behind during the second quarter of an NFL football game at Gillette Stadium in Foxborough, Mass., Saturday, Dec. 24, 2011.

Miami Dolphins running back Charles Clay (42) makes a reception as Dallas Cowboys linebacker Orie Lemon (58) defends during the first half of a preseason NFL football game, Wednesday, Aug. 29, 2012, in Arlington, Texas.

Los Angeles Chargers defensive end Joey Bosa (99) and Buffalo Bills tight end Charles Clay (85) during an NFL regular season football game against the Buffalo Bills on Sunday, Nov. 19, 2017 in Carson, Calif.

Miami Dolphins tight end Charles Clay (42) runs with the ball after escaping a tackle by San Diego Chargers strong safety Marcus Gilchrist (38) during the first half of an NFL football game, Sunday, Nov. 17, 2013, in Miami Gardens, Fla.

Buffalo Bills tight end Charles Clay (85) carries the ball against New England Patriots defensive back Devin McCourty during the second half of an NFL football game, Monday, Oct. 29, 2018, in Orchard Park, N.Y.

Buffalo Bills tight end Charles Clay (85) tries to avoid a tackle by Tennessee Titans safety Kendrick Lewis (28) during the second half of an NFL football game, Sunday, Oct. 7, 2018, in Orchard Park, N.Y.

Miami Dolphins tight end Charles Clay (42) runs with the ball during the Miami Dolphins against the New Orleans Saints NFL football game Monday, Sept. 30, 2013 in New Orleans, LA.

Buffalo Bills tight end Charles Clay (85) runs against Atlanta Falcons outside linebacker De'Vondre Campbell (59) during the first half of an NFL football game, Sunday, Oct. 1, 2017, in Atlanta.