The presumption around the NBA has been that, if beloved Celtics star Al Horford were set to retire rather than play yet another season, he would have done so by now. Golden State, as things stand, are locked in a contract stare-down with restricted free agent Jonathan Kuminga, and can't make a move on Horford until they know how that is going to play out. According to ESPN, in fact, the Warriors are proceeding as if Horford will be on the roster no matter how things play out with Kuminga.