Clay, 30, was scheduled to count $9 million against the Bills' salary cap in the final season of a five-year, $38 million contract. He finished last season with a career-low 184 receiving yards while averaging a career-low 8.8 yards per catch. Despite playing in 13 games and making 12 starts, his 21 catches were his fewest since 2012.
Former Bills general manager Doug Whaley made signing the transition-tagged Clay away from the division-rival Miami Dolphins one of his signature moves of the 2015 offseason. The Bills guaranteed $24.5 million of Clay's deal, but his production in Buffalo never matched what remain his two best seasons -- for Miami in 2013 and 2014.
Clay's most recent touchdown came in Week 3 of the 2017 season. He surpassed 30 receiving yards in only two games during the 2018 season and was made a healthy scratch for a Week 16 contest at New England.
In eight NFL seasons, Clay has caught 339 passes for 3,631 yards and 23 touchdowns. He also rushed for a score in 2013.