WALTHAM — It appears more likely that first-round draft pick James Young won’t be making his Celtics  summer debut this weekend in Orlando as he recovers from a neck injury sustained in a car accident in early June.
Young did not take part in the Wednesday morning session at the club’s practice facility, the third straight absence as the team plays it cautious with the 18-year-old swingman.
“James observed practice, did the stationary bike a little bit and just watched and participated from the sidelines,” said assistant coach Jay Larranaga, who will be coaching the Celtics ‘ summer league team for five games starting this Saturday in Orlando.
As was the case Tuesday, when the rookie missed both workout sessions, Larranaga deferred all questions about his availability to head coach Brad Stevens  and president of basketball operations Danny Ainge, neither of whom spoke to the media on Wednesday.
The car accident forced Young to miss several pre-draft workouts for teams leading up to the June 26 draft. There is a belief that uncertainty about Young’s medical status and his inability to work out allowed him to fall to No. 17, where the Celtics  selected the former Kentucky Wildcats  star.
In other news, the Celtics  may alter their two-a-day regiment on Thursday due to Hurricane Arthur making its way up the Atlantic seaboard. Many team officials were going to leave Friday the Fourth but instead may opt to beat the storm down to Florida and have a workout in Orlando prior to Summer League opening on Saturday against Oklahoma City.