The Patriots have added veteran guard Tyronne Green, according to his agency, Schwatz & Feinsod.
The 27-year old Green, listed at 6-2, 316 pounds, was a fourth-round pick of the Chargers in 2009.
Last season was the first time he was a full-time starter, appearing in 13 games and starting all of them at left guard. He appeared in 28 games with 15 starts over the first three seasons of his career.
Green became a free agent in March and was not re-signed by San Diego.