Source: Bears working out Sherrod Martin today

Veteran free agent safety Sherrod Martin is working out for the Chicago Bears today, according to a league source with knowledge of the situation.

He has visited the Oakland Raiders, St. Louis Rams and Kansas City Chiefs this year.

Martin, 28, is a former Carolina Panthers second-round draft pick from Troy who ended last season on injured reserve with torn right anterior cruciate and medial collateral ligaments that limited him to a dozen games.

He was selected 59th overall in the 2009 NFL draft.

In four seasons with the Panthers, the 6-foot-1, 200-pounder has 199 career tackles, 20 pass deflections, seven interceptions and one forced fumble.

In his first career start against the Arizona Cardinals, Martin intercepted two passes.

He was an All-Sun Belt Conference selection at Troy.

At Troy, the native of Griffin, Ga., had 292 career tackles, nine forced fumbles, nine interceptions, four sacks and three fumble recoveries.

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Aaron Wilson covers the Ravens for The Baltimore Sun.