Westbrook was enthusiastic about playing with Harden again, per sources familiar with the talks. That kind of buy-in matters. Both superstars will have to change for this to work, even though Mike D’Antoni will probably stagger minutes as rigidly as he did with Harden and Paul. D’Antoni’s experience coaching Westbrook on Team USA boosted Houston’s comfort level making this deal, sources say. The Thunder belonged to Westbrook in almost every way. The Rockets do not. Maybe that alone will spur some change in him.