I haven't heard anything about that. Honestly that fight is intriguing to me, so that would be a downer if it did get cancelled or postponed. In any case Ward vs Kovalev is the bigger and better fight.
I don't think that's a "real" news site. Go to their boxing coverage. Every headline is a question. "Is this going to happen? Will that happen?" Sounds like a fanboy posted an article wondering why HBO won't televise Pac's next fight. HBO isn't interested in the fight because of who he's fighting. They don't care what people say about the U.S.