"He's coming around," coach Claude Julien said. "He's probably doubtful for tomorrow and after that I would qualify him as day to day."
Krejci has missed the last two games with a midsection injury, and the Bruins are 1-1-0 in his absence.
Bruins coach Claude Julien said "things are going well" for defenseman Adam McQuaid, who is recovering from a neck injury. McQuaid participated in Monday's practice and felt good. The team is treating McQuaid's injury as if it were a concussion "because it's the safest route to take," said Julien.
"It feels good to be back out there skating again," McQuaid said afterward. "We'll see how things go the rest of the day and tomorrow. I felt pretty good today."
Defensman Steven Kampfer joined McQuaid at Monday's practice. Kampfer, who sprained his MCL on Sept. 29 during a preseason game, had been skating on his own since late last week.
"It feels like it's getting there," he said.