The Titans might be happy with anyone among Gilbert (or even Darqueze Dennard, who is more likely to be gone by 11th), Barr, Donald (if they believe he'd be OK in a 3-4 front) and Mosley. If they can bump down four spots and be assured of getting one of them, that could be a big win and could help them in a draft where they are currently without a third-rounder.
There has been no buzz about the Titans and Nix or Jernigan -- not that there has been any real buzz about them and anyone.
I think Ealy would be the "worst-case scenario." Drop into the middle or low teens and even if Gilbert, Barr, Donald and Mosley are gone, Ealy looks to be a solid pass-rushing force who would fit at end where the Titans have Ropati Pitoitua, but no certainty after that depending on how guys are used.
We are not positive exactly how the Titans will deploy the 3-4 front they are moving to, but their top offensive lineman, Jurrell Casey, has said he's been playing “a little bit of everything -- three, end, nose.”
Ealy would certainly fit at end and bring versatility to contribute in other ways, too.