The Buffalo Bills officially declared last year's trade for defensive tackle Marcus Stroud a success by giving him a two-year contract extension worth $8.25 million a year, Stroud's agent, Drew Rosenhaus, told ESPN.com.
Stroud was scheduled to make $3.5 million this year and $6 million in 2010. His new deal is worth $29 million over the next four years, Rosenhaus said. A total of $12 million is guaranteed and he will make $16 million over the next two seasons.
"Marcus has agreed, but we're awaiting the return of the official contract," Bills spokesman Scott Berchtold said in an e-mail to The Associated Press. "Per team policy, we do not release the terms of the contract."
A three-time Pro Bowler, Stroud was considered the face of the Jaguars' defense before they traded him to the Bills last season.
Named a Pro Bowl alternate last season, Stroud finished fourth on the Bills with 85 tackles, registered 2½ sacks, recovered two fumbles and forced one fumble.
It was a solid comeback by a former Pro Bowler who had been limited by injuries the previous two years and deemed expendable by the Jaguars. The Bills gave up two draft picks -- a third- and fifth-round pick in 2008 -- to acquire Stroud.
"This has turned out to be a really positive thing for Marcus," Rosenhaus said. "It's been a blessing. He's one of leaders of the team. And even with the two years left on his contract, he was rewarded with a contract that's consistent with the best defensive tackles in the league."
Though the Bills missed pass rusher Aaron Schobel due to a foot injury for much of last season, Stroud provided needed bulk to what had been an undersized defensive line.
The Bills defense finished 14th in the league last season in yards allowed, an improvement from 31st the previous year.
Senior writer John Clayton covers the NFL for ESPN.com. Information from The Associated Press was used in this report.