Richardson was signed to a one-year deal in February. He has never appeared in an NFL game.
The 22-year-old was a fifth-round pick by the Steelers in 2014, but failed to make the club and was signed to the team's practice squad. He reached an injury settlement with Pittsburgh during the season, and was released. Richardson is set to make $435,000 next season.
The Steelers released defensive backs
The following players will not dress for the
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