His days with the Lakers are over … but ex-NBA player Kareem Rush is still gunning to sell out the Staples Center … as the next big superstar in pop music. But now that he’s done hoopin’, Rush says he’s putting everything he’s got into music — and plans to drop a brand new album later this month. In fact, Rush says he also has his sights set on getting another ex-NBA player to join him in the studio … one of the biggest stars in the history of the sport.