Bennett was in the first year of a three-year, $21 million contract with Green Bay and will be owed $423,529 for the rest of the season.
He opted to have surgery, but said Packers team doctor Patrick McKenzie made him feel uncomfortable when they discussed the injury.
The 30-year-old Bennett had just 24 receptions in seven games with the Packers but had not played since October 22.
Bennett, however, passed his physical with the Patriots on Friday and was on the practice field. According to Demovsky, by saying Bennett failed to disclose an injury, the Packers could try to recoup some of the unamortized portion of Bennett's $6.3 million signing bonus.
Bennett spent last season with the Patriots on a one-year deal, catching 55 passes for 701 yards and seven touchdowns while helping them win the Super Bowl.
"Martellus with the Patriots, it just seems natural to me", Von Miller said.
The New England Patriots have officially ruled out wide receiver Chris Hogan, offensive tackle Marcus Cannon and defensive tackle Malcom Brown for Sunday evening's AFC showdown against the Denver Broncos, the team has formally announced.
The Packers were thinking surgery was necessary for Bennett's injured shoulder.
McCarthy said he did not talk to Bennett about retiring, and he wouldn't speculate on whether there was any connection between Bennett's Instagram post, the injury and the team's sagging fortunes without Aaron Rodgers. These next games are for you. I really don't have any comments on that. Kendricks caught a career-high 50 passes for the Rams last season.