Howard, 28, spent the last four seasons with the Chiefs and was scheduled to make $3.7 million in base salary in 2017, including $2.5 million in guarantees.
The Chiefs released Howard in part because of that $2.5 million guaranteed salary and want him to sign with another team in order to recover some offset money, the source told Schefter.
The 6-foot-3, 301-pound Howard appeared in eight games — including four starts — with the Chiefs this past season. He suffered a hip injury in November and was placed on season-ending injured reserve on Dec. 1.
Howard has appeared in 45 games over parts of five seasons with the Chiefs and Seattle Seahawks, recording 122 tackles and 7.5 sacks.