Later in the day, Grigson added Anderson, a 5-foot-10, 194-pound safety who made six starts and played in 48 games over four seasons with Philadelphia.
Anderson has 47 career tackles, four passes defensed, one interception and two forced fumbles. He also has 46 career special teams tackles.
Gordy, who had nine tackles and one interception in 12 games last season, also signed his qualifying offer from the team.
He was acquired in a trade with St. Louis in August 2012.
In three NFL seasons, Gordy has 77 tackles, four interceptions, one sack and one fumble recovery.
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