(Undated)  --  Rumors are swirling ahead of the NBA Draft and free agency involving some of the league's biggest stars.  Reports state James Harden wants out of Houston, while The Athletic reports the Rockets and Wizards have discussed a Russell Westbrook-for-John Wall swap.  The Celtics and Gordon Hayward are reportedly extending the deadline for the forward to make a decision on his 34.2-million-dollar player option.