The Buffalo Bills are bringing in free-agent running back Trent Richardson for a workout, Mike Garafolo of FOX Sports 1 reports.
Buffalo is in need of reinforcements at the position, as LeSean McCoy is reportedly facing a month-long recovery for a hamstring tear, and rookie Karlos Williams is going through the NFL's concussion protocol.
Richardson, the No. 3 overall pick in the 2012 NFL Draft, signed a two-year deal with the Oakland Raiders in March, but failed to secure a spot on the final roster.
In 46 career games, Richardson has carried the ball 614 times for 2,032 yards and 17 touchdowns.