The Knicks have at least one guaranteed slam dunk for Game Four of the NBA Finals: The Wu-Tang Clan will perform at the game, a source tells Rolling Stone . Page Six was first to report the news. The game is set for Wednesday night at Madison Square Garden . The Wu-Tang Clan are in the midst of their supposed farewell tour, Wu-Tang: The Final Chamber . The next North American leg of the trek is set to begin in August and conclude in Phoenix in October. The group is also set for induction into