The Bills today announced that the team has signed LB Blake Costanzo.
Costanzo originally joined the Bills practice squad on October 24, 2007. He was promoted to the 53-man roster on December 14 and played three games last season.
Costanzo returns to Buffalo following his release on August 30, 2008. A graduate of Lafayette College, Costanzo originally joined the NFL as an undrafted free agent in May 2006 with the New York Jets.