The NFL has so far refused to show the NFL Players Association their books to prove that some of the teams are losing money. 

The coming collective bargaining negotiation which will take place between NFL management and the NFLPA is probably going to get very ugly. 

At the 2008 Annual NFL Spring Meeting, NFL owners while crying broke over salaries that now encompass 60% of yearly revenues, exercised a clause (had until November 8, 2008 to do so) by a unanimous vote (32-0) to shorten the Collective Bargaining Agreement (CBA) with the NFL Players Association (NFLPA).