I think Whisenhunt and the Front Office need to be realistic about Davis and Franchise him for two reasons - 1) we had pretty good consistency towards the end of the season and 2) there is no-one better or even comparable to him available.
It will take a miracle for Thomas (OT) to get passed the Browns and reach us in the draft. We'd be better drafting someone like Staley, Sears, Datish or Marten in Rounds 2 or 3, letting them develop and wishing Davis all the best next off-season.
If he's really unhappy about that, franchise him and trade him to someone like the Texans for their first, then use that to move down while acquiring picks. Then we could also get someone like Nelson, Landry or Ginn in the mid rounds. Or Bryant Johnson and Calvin Pace