Seems a few NFL teams aren't worried about being as "nice" as Jerry and have released their veterans following drafting their potential replacements (rather than before - and then not drafting their replacements....) 

The first significant names include John Henderson from the Jags and Hovan from the Bucs and Adalius Thomas from NE.   

Henderson will probably find a starting role somewhere so probably not realistic for the 'Boys.  Also a very different style of player to the Rat, being a 4-3 DT.   But a change-up isn't necessarily a bad thing and we do need to reduce the number of snaps Ratliff plays or we will rapidly burn him out.   Chiefs are interviewing him about NT in their 3-4. 

http://sports.espn.go.com/nfl/news/story?id=5136281

Hovan is intriguing as my sense he is more of the quick penetration type player that Rat is (although 10 year vet, likely lost a step or two).  His production has declined and the Bucs finished last in run D last year - the scribes seem to lay a fair bit of the blame on the Bucs DT's.   If we could get him for the right price he may be worth a look as a backup.   With fewer snaps, his performance per snap may improve. 

http://sports.espn.go.com/nfl/news/story?id=5136695

Adalius Thomas is out there too, but with the Sean Lee pick doesn't really fit.  

The Cowboys need to keep a close eye on the teams that drafted young interior linemen.   Hopefully a couple of decent veteran interior o-linemen or safeties with large contracts get bounced for younger players post-draft and we can potentially sign on a better value contract for a year or 2 till our young'uns are ready.