The Boston Celtics are trying. There has been some noise connecting Boston to centers around the NBA, but one name keeps popping up: LA Clippers center Ivica Zubac. Mike Scotto of Hoopshype reports the Celtics have already tried to deal for Zubac , but it didn’t go anywhere. Simons, a first-round pick, and a first-round swap is probably as deep as Boston wants to dig for a trade. There are still other options out there for Boston, but the dream of an obvious starting-level center might be fading.