Pro Football Focus just posted their coverage rankings for the CB's in the 2009 and 2010 drafts, and here is the link.
The top rated CB from the 2009 draft, and the #10 ranked CB in all the NFL in 2010, was the Titans Jason McCourty (6-0, 193, 4.32-40), their #203 draft pick in 2009 (1 pick after the Panthers traded their pick to the Raiders, for the #216 pick, Captain Munnerlyn and their 2010 6th round pick). McCourty's 2010 grade was a +7.1 (his twin brother Devin, who went to the Pro Bowl as a rookie grade was +6.8), ranking 1st (a -2.5 in 2009, ranked 8th), and the Panthers CB Captain Munnerlyn ranked 4th, at +2.6 (a -2.9 in 2009, ranked 9th).
The Titans currently have Pro Bowl CB Cortland Finnegan and 2nd year CB Alterraun Verner (the #3 ranked rookie CB in 2010, with a +4.2 grade) starting ahead of McCourty. Verner had 1,023 snaps last season, while McCourty only has 779 snap in 2 seasons. So the Titans might be willing to trade McCourty, for the right offer. The Titans biggest needs are for a veteran QB to guide Jake Locker, a starting MLB, maybe becup DE (Baban, Ball, and Ford are all free agents), and SS (so the can cut Chris Hope's around $6.5 million contract). The reason the Titans need a MLB is that it's almost a sure thing that their starting MLB Stephen Tolloch (of NC St., who had 169 tackles last season) will leave as a free agent, though the drafted ILB Colin McCarthy at #109 in the 4th round, Panthers backup MLB Dan Connor (either Beason or Connor will leave as a free agent next year, because both want to start, and MLB is the best position for both) for Titans CB Jason McCourty might be a great deal for both teams (if Beason's contract can be extended first).
In CB Jason McCourty the Panthers would get the 10th rated coverage CB in the NFL last season, who still has 2 years left on his rookie minimum contract, who could start opposite Gamble at CB this year, and if Gamble has another bad year, then they can replace him with Hogan next year. McCourty would probably cost around $10 million less a season then CB Johnathan Joseph. Dan Connor would give the Titans a good solid starting MLB for 2010 (and maybe beyond) to help McCarthy settle into the NFL as a rookie.
PS: this high ranking for McCourty makes me feel much better about my mocking him to the Panthers in the 3rd round of the 2009 draft, rather than DT Corvey Irvin (I had DT/NT Roy Miller in the 2nd round rather than Sherrod Martin).