Steve Nash walked into the Lakers' practice facility Wednesday wearing a black pinstriped suit with a red pocket square, his white dress shirt bearing an open collar. It might be the last time this summer a superstar breaks out the haute couture to be introduced as a Laker. A day after the Lakers reentered trade discussions involving Orlando's Dwight Howard, General Manager Mitch Kupchak did not exactly express optimism that his team would add another celebrated player before next season.