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Coming off a stellar season in 2011, Brandon Carr is set to make a splash in free agency. Turning 26 prior to the 2012 season, Carr is by far the biggest reach for Denver on this list.
However, cornerback is a position of great need for the Broncos, and it would be the most likely for the organization to shell out for an impact player in free agency.
With four interceptions and 15 pass deflections in 2011 for Kansas City, Carr built upon a career that now includes eight picks and 63 pass deflections in four seasons.
Denver's defense needs an infusion of young talent with an aging Champ Bailey holding down the fort. Incumbent starter Andre' Goodman has been heavily criticized for his play of late and will turn 34 just prior to the start of the 2012 NFL season.
Undrafted rookie Chris Harris shows promise, as did Cassius Vaughn prior to injury, yet no player currently on the roster matches Carr's playmaking ability or even shows any promise to take over for Goodman.
Carr played in a similar zone system last season in Kansas City, so moving into Del Rio's defensive system should prove to be easy. A duo of Champ Bailey and Brandon Carr would put Denver among the top of the league in cornerback tandems, with a solid core of Harris, Vaughn and Syd'Quan Thompson playing inside.
If Carr proves to be too expensive for Denver to pursue, which is a possibility, another target is free-agent corner Carlos Rogers. Rogers also played in a zone system for the 49ers in 2011 and for six seasons in Washington, with degrees of success.
Rogers will turn 31 next season, and while putting up fantastic numbers with six interceptions and 19 pass deflections last season, age makes him a much riskier signing than Carr.
Still, Rogers would undoubtedly make an impact and possibly allow Denver to void the final year of Goodman's expensive contract.