The NFL Free Agency period begins on March 12th at 4:00 PM Eastern. That is when the League Year starts as well. From that date on all teams have to get below the Salary Cap. What this essentially means is that you can expect a flurry of activity in the Dallas Cowboys front offices at Valley Ranch over the next thirty nine days. They still have some Coaching vacancies to finalize, but they also have some cap room to clear.
One thing that they can do to clear cap room immediately is to renegotiate some contracts that have large cap hits for 2013. The obvious one is Tony Romo, who is in the final year of his deal and halted negotiations in 2012 to focus on the season. Expect Tony to get a new deal in this window leading up to the League year.
Another player who has a high cap number and an automatic clause in his deal is 2012 Free Agent blue chip, Cornerback Brandon Carr. It is pretty obvious Carr will also get a re-worked deal.
In addition to these two players there are three players who have high cap hits and were disappointing in some ways in 2012. They might either get re-worked deals or two of them might be designated as Post June 1 releases so their cap hit can be spread across two seasons. Those players are Jay Ratliff, Miles Austin, and Doug Free. Given the absolute decimation of the roster at Defensive Tackle due to alcohol fueled accidents and possibly pending suspensions, as well as a shift in Defensive Scheme to a 4-3, I would be shocked if Jay Ratliff is released. If he is, expect the 1st round pick to be DT instead of Offensive line.