Terms of Gandy’s deal weren’t disclosed.
An eight-year veteran, Gandy (6-foot-3, 295 pounds) has played in 120 games with 19 starts with the Indianapolis Colts (2005-07), and Detroit Lions (2009-12), and has spent time playing both center and guard. In addition, Gandy has contributed on special teams on kickoff return units as well as the field goal teams last season for the Lions.
Gandy has played in at least 15 games seven times in his eight-year career, and has played in all 16 games five times.
Gandy played in 15 games last season for the Lions, contributing mostly on special teams.
Merrell, meanwhile, was an undrafted rookie out of Rutgers.