Rajon Rondos latest injury and surgery could set the Celtics back a bit while trade rumors will definitely quiet down and the shuffling of point guards begins. As it stands Phil Pressey, Marcus Smart, John Lucas fight it out for the Celtics starting birth. Pressey as been around for a while and knows the system. It couldn’t happen at a worse time than now last week Ainge sent veteran Keith Bogens to Cleveland in the latest mega trade . That doesn’t leave second year coach Brad Stevens much to work with. Rondo is expected to miss six to eight weeks. That will be at least til the end of December. Last year when Rondo came back in February he was not quite the effective player he was when healthy.Rookie number one pick Marcus Smart will be relied on heavily to carry the load along with Pressey. What was once a position of depth is now a position of concern.