Collison (hip) is unlikely to play Friday when the Kings host the Celtics, Jason Jones of the Sacramento Bee reports.Collison was very limited during Wednesday's session, so unless he significantly ramps up his activity Thursday, it appears Ray McCallum is on track to get the start. The Kings dealt Ramon Sessions to Washington in exchange for Andre Miller on Thursday, and if Miller does not arrive in Sacramento in time for Friday's game, the team could be severely shorthanded at point guard.