Green-Ellis signs; three others on board

FOXBOROUGH, Mass. -- The Patriots have announced the re-signing of running back BenJarvus Green-Ellis, as well as the signings of veteran guard/centers Chris Morris and Jonathan Compas and undrafted rookie running back Richard Medlin (Fayetteville State).

Green-Ellis had been tendered as a restricted free agent; it is unclear if the fourth-year veteran inked a new deal or simply signed his one-year restricted free agent tender. Due to CBA transition rules, Green-Ellis will not be able to practice until Thursday, or the start of the 2011 NFL League Year.

Morris, 28, worked out for the Patriots on Tuesday. He was originally drafted in the seventh round by the Raiders in 2006, and spent four seasons in Oakland before joining the Panthers in 2010. He has played in 51 career games, making 11 starts.

Compas, 25, entered the league as an undrafted free agent with the Raiders, and played in two games as a reserve with the Buccaneers in 2009. He was released by Tampa Bay on September 24, 2010 and spent the remainder of the season out of football.

Both Morris and Compas will add depth to an interior of the Patriots offensive line that had only eight players in uniform for Tuesday's practice. The unit will be bolstered by the return of re-signed free agents Matt Light and Logan Mankins, but center/guard Ryan Wendell was out of practice on Tuesday and his status is unclear.

The team also confirmed the previously reported release of running back Thomas Clayton while announcing that rookie free agent guard Mike Berry has also been waived. Berry had not yet practiced after opening training camp on the Active/Non-Football Injury list.