NFL.com wire reports ORCHARD PARK, N.Y. (March 29, 2006) -- Defensive end Ryan Denney signed a four-year contract to stay with the Buffalo Bills. Buffalo's second-round pick in the 2002 draft, Denney had 20 starts in 56 games. He had a career-high four sacks in 16 games last season while backing up Chris Kelsay.http://www.nfl.com/teams/story/BUF/9341661