Yeah nothing earth shattering, just the typical increase as the cap goes up again next year so you might save up to 10% on his deal? The big thing would be since his contract is up he would be free to negotiate with 31 other teams as well unless the Cowboys want to tie up a ton of money in the franchise tag to negotiate a LTC with him.
The other thing I look at is how much can he salary really go down? Its one thing if he is a total liability in coverage this season, but I don't see him as that type of player. Even in the case of injury the Cowboys have shown they are not afraid to pay guys.