Buffalo Bills defensive tackle Kyle Williams will return for a 13th season in Buffalo. Williams agreed to a one-year contract. The announcement came one day before the NFL's free agency period opened. Williams' contract had expired and he didn't rule out the possibility of retiring. The 34-year-old is a one-time All-Pro and five-time Pro Bowl selection. He was drafted in 2006 out of LSU. Williams' contract agreement coincided with free agent defensive tackle Star Lotulelei agreeing to sign a five-year deal with Buffalo.