The New England Patriots released 36-year-old safety John Lynch on Sunday, just 16 days after signing the 15-year veteran.
"It goes without saying but John is an all-time great safety, one of the league's classiest professionals and his elite play speaks for itself," Belichick said. "As has been the case in other situations, I would not rule anything out down the road."
Lynch, recently released after four seasons in Denver, is a nine-time Pro Bowler.
"I have no regrets about my time thus far with the Patriots," Lynch said. "The immense respect that I've long held for the organization has been only heightened over the past couple of weeks. I am going to keep all options open and look forward with excitement to see what the future brings."
In addition to Lynch, the Patriots also released third-year receiver Chad Jackson, New England's second-round draft pick (36th overall) in 2006.
The 6-foot-1-inch, 215-pound Jackson played in 14 games for the Patriots with one start, totaling 13 receptions for 152 yards and three touchdowns.
New England also signed the following six players to the team's practice squad: Defensive lineman Titus Adams, safety Mark Dillard, running back BenJarvus Green-Ellis, linebacker Vince Redd and defensive backs Mike Richardson and Antwain Spann.