NFL star, Tom Brady has never known what it's like to play out the final season of a contract in his 20‑year NFL career, and the New England Patriots superstar quarterback isn't about to find out.

TVNZ reports Brady who turned 42 on Saturday, is signing a two‑year, US$70 million extension that runs through 2021 and includes a hefty raise this season.

A person with knowledge of the deal told The Associated Press Brady will get an $8 million raise in 2019, when he'll make US$23 million.

The extension also calls for him to make US$30 million in 2020 and US$32 million in 2021, when he would be 44.

Brady, who led the Patriots to a 13‑3 win over the Los Angeles Rams in Super Bowl 53, is one of just four players to win six NFL titles.