Tom Brady, who turns 42 in August, is only under contract through the 2019 season.
Robert Kraft says the New England Patriots have no reservations about extending the quarterback's contract.
Brady has repeatedly said he plans to play until he's 45.
"Think about it: The last three years we've been privileged to go to the Super Bowl with a quarterback in place. I would be quite surprised if he didn't continue for quite a while as our quarterback," Kraft said.
Brady is scheduled to count $27 million against the salary cap.