Breanna Stewart, Kelsey Plum reportedly air frustrations over CBA negotiations in letter to WNBPA head With the clock ticking on a new CBA, the WNBA's union is facing internal unrest. Content Original Link: https://sports.yahoo.com/wnba/article/breanna-stewart-kelsey-plum-reportedly-air-frustrations-over-cba-negotiations-in-letter-to-wnbpa-head-014530539.html