The Buffalo Bills signed defensive end Kourtnei Brown, running back Anthony Allen and guard Randy Colling to future contracts Tuesday.
Each player will become part of the 90-man offseason roster.
Allen is the most experienced of the group, playing in 21 games from 2011-2012 for the Baltimore Ravens. He averaged 3.6 yards on 19 carries and had one touchdown. Allen (6-foot-1, 223 pounds) was a seventh-round draft pick of the Ravens in 2011 from Georgia Tech.
Brown was in training camp with the Bills this season but was sidelined during the preseason with a groin injury.
Colling (6-5, 320) is a native of Arcade, N.Y., and played at Gannon University as a defensive lineman. He has also played in the Arena Football League.