Assessing PacMan's trade value

According to multiple media reports, DeAngelo Hall is on the verge of being traded from the Falcons to the Raiders in exchange for a second round draft pick in the 2008 NFL Draft. The Titans have their own young and talented corner that may be available via trade this offseason. The plight of Adam "PacMan" Jones is well-documented and as a result of his actions, the chances of him being a Tennessee Titan next year and beyond are somewhere between slim and none. In light of the seemingly inevitable DeAngelo Hall trade, what can the Titans expect in return if they decide to trade their troubled but gifted corner?