Flynn, who was on the active/non-football injury list with a hamstring injury, was signed by the team in June on a one-year deal to support backup quarterback Jimmy Garoppolo as the Deflategate case with starter Tom Brady made its way through the legal system.
Brady and NFL commissioner Roger Goodell are scheduled to appear at a court-ordered settlement hearing Aug. 12 in New York City, in an attempt to get Brady’s four-game suspension overturned and return him to his starting role.
Flynn, 30, spent five-plus seasons with the Green Bay Packers as a backup to Aaron Rodgers. In the 2012 season finale, he threw for Packers records of 480 yards and 6 touchdowns in a victory against the Detroit Lions.
Flynn parlayed that performance into a three-year deal, $20.5 million with the Seattle Seahawks the following off-season, but was beaten out by rookie Russell Wilson in training camp for the starting position.
In eight seasons, Flynn, a former seventh-round pick, has thrown for 2,541 yards with 17 touchdowns and 11 interceptions.
New England starts the preseason at home on Thursday against the Packers.
- Scooby Axson