Michael Carter-Williams out for at least a month with injury

BOSTON – The Bulls will be without newly-acquired Michael Carter-Williams for the next four to six weeks, after the guard suffered a bone bruise in his left knee during the win in Brooklyn on Monday night.

Carter-Williams, who was acquired for Tony Snell in the preseason, crumbled in the second quarter, and the initial fear was it could have been his ACL. The fact that it was just a bone bruise was a relief.

According to coach Fred Hoiberg, they could also be without the services of Doug McDermott against the Celtics, who went into the concussion protocol late Monday night.

“He was asymptomatic when he got to the hotel [Monday] night,’’ Hoiberg said. “That’s when the 24 hours starts. So as long as he’s asymptomatic and passes the necessary steps, he would be available to go. We just have to make sure he passes everything.’’

McDermott is the fourth-leading scorer on the team, averaging 13.3 points, and has been the most consistent player off the bench so far.

Hard feelings?

Jimmy Butler and Jae Crowder were teammates and friends back in their Marquette days, but had a little run in last week in Chicago, when the two were tangled up on the floor and Crowder jammed the basketball in Butler’s chest.

Butler wasn’t about to downplay the rematch Wednesday night in Boston, either.

“I don’t know [if it’s squashed],’’ Butler said. “That’s a good question. I haven’t talked to [Crowder] yet, but I don’t got no hard feelings. It’s basketball. I’m going to go at his neck again come [Wednesday], too. Tell him I said it.’’