Phoenix Mercury's Satou Sabally calls league's proposal inadequate while players unite to demand compensation that matches the league's expanding business.

Negotiations with the WNBA hit an early roadblock when the union rejected the league’s first collective bargaining agreement offer sent recently, according to Front Office Sports, and Sabally called it a “slap in the face” when addressing reporters Tuesday.

In what is expected to become a contentious negotiation for a new collective bargaining agreement, WNBA players do not appear impressed with the initial labor proposal offered by the league, multiple outlets reported.