Well, the first two weeks of the regular season are on the line, so both sides will meet tonight.
Brian Mahone of the AP (via the Miami Herald) takes a look at what is at stake and what both sides what here: NBA negotiators to meet Sunday night
Here is an excerpt: "A person with knowledge of the plans says top negotiators for the NBA and players' association will meet Sunday night, perhaps the last chance to avoid canceled regular-season games.
Commissioner David Stern has set Monday as the deadline for a new labor deal to be reached before the first two weeks of the season will be canceled. No meetings had been planned since he set the deadline Tuesday, before the sides agreed to talk Sunday."