Free agent C Jamaal Jackson has retired from football.
Jackson attended the Giants’ rookie minicamp, but decided he no longer had desire to play. “He just said, ‘Coach, I just don’t feel like my heart’s in it,’” coach Tom Coughlin said Saturday. An undrafted free agent in 2003, Jackson took over as the Eagles’ center midway through the 2005 season and stayed there until tearing his biceps in Week 1 in 2010. He was released in March, and didn’t make any visits before working out with the Giants.