Kyle Williams and the Buffalo Bills are holding talks to negotiate a potential contract extension for the steady defensive lineman, who's coming off his best season in the National Football League.

"Yeah, they're talking right now," Williams told The Associated Press. He didn't provide any further details except to say his agent is handling discussions.

General manager Buddy Nix declined comment in citing the team's policy of not discussing contract talks. Williams has been a starter since his rookie season in 2006, when the Bills drafted him in the fifth round out of LSU.

His current contract runs through the end of the 2012 season. And it's been extended once already, in 2008, when he signed a deal that was worth $14.4 million US.

Though comparatively undersized among NFL defensive tackles, the six-foot-one, 300-pound Williams has been the Bills most consistent and reliable defensive player. He's missed only two games, in 2009 due to a knee injury.

And he's coming off a solid season in which he had a career-high and team-leading 5 1/2 sacks. That was good enough to earn his first Pro Bowl appearance despite playing on one of the NFL's worst defences. He was selected as a first alternate and then added to the AFC team to replace injured Oakland Raiders lineman Richard Seymour.

Overall, he has 13 1/2 sacks in 78 games.

Williams will get help this season playing alongside rookie first-round pick Marcell Dareus on a revamped defence that also features pass-rushing specialist, linebacker Shawne Merriman.