Five days after initially agreeing to contract terms, the former Arizona Cardinals running back has finalized a four-year deal with the Broncos, a source told FOXSports.com. Financial terms weren't immediately available.

As first reported by FOXSports.com, Arrington and fellow running back Correll Buckhalter (Philadelphia) agreed to contracts last Friday on the first day of the free-agent signing period. But a problem with contract language scuttled Arrington's deal.

Since then, the Broncos have unsuccessfully pursued former New York Giants running back Derrick Ward (he signed with Tampa Bay) and reportedly added another veteran to the fold this morning. FOX Denver affiliate KDVR-TV reported that LaMont Jordan had agreed to a two-year, $2.5 million contract. Jordan played last season in New England under new Denver head coach Josh McDaniels when he was the Patriots' offensive coordinator.

A four-year NFL veteran, Arrington had 432 combined yards from scrimmage (rushing and receiving) and averaged 25.6 yards on kickoff returns with one touchdown in 2008. He could potentially become Denver's version of New England's Kevin Faulk as a third-down back.

Denver's signing of three veteran running backs in free agency is curious, especially because the Broncos already have most of their players at that position from 2008 under contract. McDaniels, though, ran a committee system in New England that deployed running backs designed to emphasize individual talent sets in niche roles. McDaniels may be trying to create the same offensive chemistry in Denver, which ran a zone-blocking system the past 14 seasons under fired head coach Mike Shanahan.

Seven Broncos running backs ended last season on injured reserve.