Following the season-ending knee injury to center Dan Koppen, the Broncos have agreed to terms with lineman Steve Vallos (6-3, 310), pending a physical.
The 29-year-old Wake Forest alum has played in 42 games (nine starts) over six seasons in the NFL with Seattle, Cleveland, Jacksonville, and Philadelphia.
In 127 snaps with Jacksonville over the last two games of 2012, Vallos graded out at a poor minus-1.1 according to PFF, with one penalty, two QB hits, and two hurries.
Manny Ramirez had worked as the starting center throughout OTAs and minicamp, and he is expected to remain in that role going forward.
Also on the roster are C.J. Davis and Quentin Saulsberry, while other unsigned veterans include Jeff Faine, Eugene Amano, and Ryan Lilja. Jeff Saturday, who spent twelve seasons snapping to Peyton Manning, is currently working for ESPN in an analyst role.