The Raiders are showing interest in free agent RB Cedric Benson, who rushed for 1,067 yards last season with Cincinnati, ESPN is reporting. The Raiders lost backup RB Michael Bush as a free agent to Chicago. Taiwan Jones, a second-year pro, and Mike Goodson, acquired from Carolina earlier this year in a trade, are the top candidates on the roster to replace Bush, but both are undersized. Benson (5-11, 227) has 5,769 career rushing yards in seven seasons.