The WNBA players’ union sent a collective bargaining agreement counterproposal to the league, a person familiar with the negotiations told The Associated Press on Saturday night. The person spoke on condition of anonymity because of the sensitive nature of negotiations. The union proposal, which was sent Friday night, comes a few days before a Tuesday deadline set by the league, which said it would need at least a handshake agreement with the union to start the season on time. It’s unknown what changes the union made in its latest proposal. Revenue sharing is the key sticking point between the sides.