The league says the union has no grounds for the action and is prohibited from filing it by the collective bargaining agreement.
DeMaurice Smith says overseas games raise concern over player health and safety.
Keenan Mace, a 6-4, 313 lb. former defensive end out of Lindenwood, attended Beaumont High School.
A tentative timeline would allow NFL clubs to start signing 2011 draft picks and rookie free agents on Tuesday. Conversations with veteran free agents also could start Tuesday.
DeMaurice Smith wrote in an email to the 32 team representatives: “There is no agreement between the NFL and the players at this time.”
Owners are set to hold a special meeting in Atlanta on Thursday, when they could ratify a new agreement – if there is one.
Other key issues remained for owners and players to resolve, including free agency and new offseason workout rules.
Even once an agreement in principle on the core economic issues is drawn up, there will be more work to be done.
Should negotiations last beyond July 19, or the owners’ meeting two days later, that could lead to even deeper cuts in the preseason.