Mays, 29, is a former second-round pick of the 49ers back in 2010. He lasted just over a year in San Francisco before he was traded to the Bengals. After four years with the Bengals, Mays signed a one-year contract with the Raiders 2015.
The Bengals elected to re-sign him to a one-year, $840,000 contract back in March of last year only to cut him loose in July shortly before news of a new suspension surfaced.
In 2015, Mays appeared in 14 games and recorded 26 tackles and five pass defenses for the Raiders. Pro Football Focus has him rated as the No. 63 safety out of 88 qualifying players.