Lucic had flown with the team from Buffalo to Winnipeg on Saturday, but then returned to Boston.
"It's personal reasons. He's gone back to Boston. It's one of those things that happens every once in a while and we're all human here," Bruins coach Claude Julien told CSNNE.com. "So he's gone back to Boston."
With Lucic out, Jay Pandolfo will see his first action of the season. The Bruins signed the 38-year old to a one-year deal earlier in the week. Pandolfo is expected to skate on the fourth line, with Daniel Paille moving up to the third line and Rich Peverley taking Lucic’s spot on the top line.