The New England Patriots worked out linebackers James Anderson, Marvin Mitchell and Stevenson Sylvester, according to a league source.
None of the players were immediately signed.
Anderson started every game last season for the Chicago Bears, recording 102 tackles and four sacks. He previously played for the Carolina Panthers and has 556 career tackles and a dozen sacks with three interceptions.
Michell had 42 tackles last season for the Vikings. The former New Orleans Saints draft pick has 171 career tackles, two sacks and one interception.
Stevenson had a dozen tackles in nine games with one start for the Pittsburgh Steelers last season. He has 34 career tackles for the Steelers in four NFL seasons.
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Aaron Wilson covers the Ravens for The Baltimore Sun.
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