Free-agent defensive end Mark Anderson was in Buffalo on Wednesday to meet with Bills coaches, according to the team's official website.
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Which teams have vastly improved in free agency? Which teams are dropping the ball?
The Bills made one of the biggest splashes in free agency, locking up Mario Williams with a six-year, $96 million deal.
Anderson traveled to Buffalo after visiting with the Baltimore Ravens on Tuesday, according to the Carroll County Times.
The 28-year-old Anderson has 35.5 sacks in six seasons, including 10 with Patriots last season. Williams had five sacks in an injury-shortened 2011 season.
The Bills had just 29 sacks total in 2011, with no player notching more than 5.5.
Anderson was a fifth-round pick by the Bears in the 2006 NFL Draft. He started 14 games in 2007 but has started six games since.
The Dolphins are also interested in Anderson, according to NFL Network insider Jason La Canfora, and the Patriots are considering re-signing him.