ORCHARD PARK, N.Y. — The Buffalo Bills have signed linebacker Ryan Manalac to the 53-man roster. In accordance with team policy, terms of the deal were not disclosed.

The Bills also placed defensive back Todd Johnson on injured reserve.

Manalac, a 6-foot, 235-pound Cincinnati product, was signed to Buffalo's practice squad on December 23, 2009. Manalac originally entered the NFL as an undrafted free agent with Buffalo on August 13, 2009 and was released before the start of the regular season.

Manalac will wear No. 96.