Whenever, it's perfectly reasonable to worry a bit.
Celtics have hired Art Horne to be head athletic trainer, per league sources. He replaces Ed Lacerte, who had been with BOS for 30 years.
That's what happened when athletic trainers Ed Lacerte (30 years experience with the team) and Bryan Doo (14 years) decided to call it a day after last season, uninterested in taking on a reduced role with the team, setting off concern over who might replace them. The Boston Celtics, for their part, were seeking to modernize their athletic training regime to keep up with other teams around the league doing the same, and have done so now by bringing on Horne.