The 76ers have begun their search for a coach to replace Doug Collins, but there could be a few obstacles. One issue facing the Sixers is that some of the candidates who have been identified are still involved in the playoffs. Indiana assistant Brian Shaw, for instance, is also a candidate for the Brooklyn Nets job. The Nets are looking to replace interim coach P.J. Carlesimo, who was fired after Brooklyn dropped Game 7 of its first-round series to the Chicago Bulls.