Amid all the unanswered questions who the Lakers will hire as their next head coach and when, two team sources strongly disputed that any delay stems from waiting out to see if Clippers coach Doc Rivers will become available because of embattled owner Donald Sterling prolonging a costly litigation battle. ESPN’s Bill Simmons and Jalen Rose each brought up that prospective theory on why the Lakers have gone three months without hiring a coach since Mike D’Antoni’s resignation on April 30. Clippers interim Chief executive Dick Parsons also testified in court Tuesday that Rivers does not want to continue to coach if Sterling still owns the team next season. Lakers general manager Mitch Kupchak stood before a bunch of microphones, tape recorders and cameras, but his presence on Wednesday at the team’s practice facility in El Segundo hardly cleared up the uncertainty on where the team stands with its coaching vacancy. Kupchak displayed Ed Davis’ No. 21 Lakers’ jersey. Kupchak gushed about Davis’ potential. Kupchak vaguely spoke about how the Lakers “made significant improvements and changes” to their roster despite losing out on LeBron James and Carmelo Anthony as well as losing Pau Gasol. Then, Kupchak ducked out of the press conference room without taking any questions from reporters.