DeMarcus Ware, Brandon Carr and Jason Witten restructured their contracts with the Dallas Cowboys to save the team roughly $18 million against the 2013 salary cap.
Teams must be in compliance with the NFL salary cap before free agency kicks of the league year March 12.
The Cowboys could gain additional room if they agree to a long-term deal with quarterback Tony Romo. He is scheduled to count $16.8 million against the team's cap under the terms of his current contract.
The accounting on the contracts of Witten and Ware make the 2013 offseason workable, but there is a price for the adjustments. Ware's 2014 cap number is now $15.08 million. He'll be 32 before the start of the 2014 season.