National Football League owners approved unanimously a...

National Football League owners approved unanimously a free agency plan that will go into effect Feb. 1 unless an agreement is negotiated with the players’ union.

Jack Donlan, executive director of the owners’ Management Council, said some revisions were made in the plan but declined to discuss them until after he presents the plan to Gene Upshaw, head of the players’ union.

The NFL Players Assn., meanwhile, unveiled a plan of its own that would allow teams to hold separate 12-round conference drafts that would permit players to negotiate with two teams rather than one, as in the past.