New England Patriots offensive guard Shaq Mason agreed to terms on a five-year, $50 million contract extension, multiple media outlets reported on Monday.
NFL Media's Mike Garafolo cited a source informed of the transaction that revealed Mason will receive $23.5 million guaranteed and $30 million over the first three years of the deal.
Mason, who will celebrate his 25th birthday on Tuesday, was set to begin the final season of his rookie deal -- which paid a base salary of $1.9 million in 2018.
The 6-foot-1, 310-pound Mason's new deal puts him among the NFL's top earning right guards, although well behind Zack Martin of the Dallas Cowboys and Andrew Norwell of the Jacksonville Jaguars. Martin received a six-year, $84 million deal in June while Norwell's pact is worth $13.3 million per season.
Although Patriots coach Bill Belichick did not confirm the transaction, he said Monday that he has seen improvement from Mason with each passing year.
"Shaq's done a good job for us from the time he got here," Belichick said. "He came from an offense that was quite different from ours and he adapted quickly and did a real good job of learning new techniques. He's an athletic player that has good strength, good balance, an excellent run blocker, can pull, run and hit. He's gotten better each year and he's done a good job for us.
"He and Joe (Thuney) and David (Andrews) -- those three guys have played a lot of football together and they're young. Hopefully they can continue to play a lot for us in there.
Mason has appeared in 46 games (41 starts) since entering the league in 2015 as a fourth-round pick out of Georgia Tech. He told the Boston Herald last month that he would like to remain with the Patriots.
"Yes, I would," Mason said. "But as far as all that goes, I don't look ahead, honestly. I'm just worried about reporting to training camp ... and taking it from there."