According to various sources including the Denver Post, the Denver Broncos are looking to trade 28 year old DT Gerard Warren. Warren is listed at 6 foot 4, 325 pounds and was a steady force in Denver's Cover 2 defense.
Warren would add a veteran presence to the Colts defense and would most likely only cost the Colts a second day pick in next years draft.
UPDATE: The Broncos are planning to trade or release Warren by Tuesday. Among the interested teams are the Colts and the Saints.