The Philadelphia Eagles and free agent defensive back Marlin Jackson have agreed to a two-year contract.

A 2005 first-round draft pick by the Indianapolis Colts, Jackson is coming off a pair of season-ending knee injuries. He missed the second half of 2008 with a torn ACL in his right knee and returned in 2009 before tearing the ACL in his left knee in a November practice.

Jackson has 306 tackles and four interceptions in 56 career games with the Colts. The 6-foot, 196-pound Jackson can play cornerback and safety.

The Eagles have Asante Samuel and Sheldon Brown entrenched at cornerback, but had difficulty settling on a full-time free safety last season.

Team officials announced the agreement with the 26-year-old veteran on Wednesday.