Absent a last-minute agreement that no one around football expects, the NFL Players Association plans to decertify by Thursday in an effort to pre-empt an owners-generated lockout, according to multiple league and union sources.

The collective bargaining agreement says the NFLPA in effect must wait six months to decertify if it does it after the collective bargaining agreement expires. It expires at 11:59 p.m. Thursday night.

If the union decertifies, it is no longer a union, and the National Labor Relations Board loses its hold over the NFLPA. The owners are expected to claim the decertification is a sham and challenge it in the NLRB.

But the NFLPA is poised to act this week before it is locked out. It already has obtained unanimous approval from players across the league to decertify, a process it undertook throughout last season and the union's executive committee reaffirmed that vote this past Tuesday to empower NFLPA executive director DeMaurice Smith to take this action.

The primary reason for decertification would be to file for an injunction that, if granted, would prevent the owners from locking out the players. NFLPA officials and players believe that this could be the only hope to have a full NFL season next year. Furthermore, decertifying as a union prior to the expiration of the CBA would allow NFL players to seek injunctive relief and commence anti-trust action against owners in front of U.S. District Court Judge David Doty, who has had jurisdiction over the current labor agreement since 1993. Owners have attempted unsuccessfully to have Doty removed from jurisdiction and strategically want the CBA to expire to effectively eliminate his authority, a source said.

The NFL and NFLPA are scheduled to meet with federal mediator George Cohen one more time on Tuesday, yet after seven days of meetings last week, Cohen said significant differences still remain.