Warriors center DeMarcus Cousins and Knicks center Enes Kanter talked trash to each other on the court hours before the game during workouts, a source said. The source said the NBA got wind of it and let the referees know. Cousins told Warriors teammate Draymond Green to watch out on pick and rolls involving Kanter during the game, the source said. The source said referee Scott Foster warned Cousins about talking to Kanter. After Cousins attempted to tell Foster he was mistaken, the source said, the injured center was given a technical and tossed. Cousins and Foster have had a long history.