According to Williams, who guested on TSN Drive with Dave Naylor Monday evening, he and incoming general manager Masai Ujiri played telephone tag Sunday before Leiweke -- the new president and CEO of Maple Leaf Sports and Entertainment -- broke the news to him over the phone a day later.

"He just basically said that he was going to give Masai the opportunity to start with a clean slate and move forward with the organization," Williams said of that conversation. "Unfortunately my contract wasn't renewed."

http://www.tsn.ca/nba/story/?id=425758
The end result is the same but I don't see a contract not being renewed as the same thing as being fired.