Carlos Boozer will undergo arthroscopic surgery on his injured left knee.

Orthopedic specialist Dr. Richard Ferkel will perform the surgery.

"What they're suspecting is that he's got some loose particles in there that are settling in the joint," Jazz general manager Kevin O'Connor said.

For the second time in as many seasons, a Utah forward frustrated Dirk Nowitzki and drew a flagrant foul.

Last March, Nowitzki tangled with Andrei Kirilenko under the basket and drew a Flagrant-1 foul when Kirilenko was slammed to the court on his back.

On Friday night, Matt Harpring irritated Nowitzki to the point that he retaliated with a fist to Harpring's face. Nowitzki was ejected.

"It appeared to me that it was accidental, but they said his fist was closed so it's an automatic Flagrant-2," Mavs coach Rick Carlisle said. "They went and looked at the video and I said, 'What he did wasn't intentional.' He said it doesn't matter, just by the letter of the rule if there's a closed fist.

"I don't think the intent was to strike Harpring in the face. Dirk doesn't have any kind of pattern with that kind of stuff. It was microcosm of the night, really."

Forward Paul Millsap has blossomed while Utah has been without Carlos Boozer, and now the Jazz will be without Millsap too.

According to the Associated Press, Millsap will miss seven to 10 days because of a sprained knee ligament.

Millsap had 15 straight games recording a double-double before hurting his knee against Milwaukee on Tuesday.

Jazz forward Paul Millsap is questionable for the team's game against the Mavericks on Friday because of a hyperextended left knee.

Millsap had an MRI on Wednesday, but the Jazz said results weren't expected until Friday.

He hurt his knee late in the second quarter Tuesday night at Milwaukee and was helped to the locker room. Millsap returned for the second half with a brace on the knee.

The Jazz almost traded forward Carlos Boozer last season when it was learned that his son had been diagnosed with life-threatening sickle cell anemia.

Boozer privately requested to be dealt somewhere closer to where the child was being treated in Miami, which is an area much more conducive to recovery than Utah.

Boozer played through the season mostly away from his son, and before a trade could be worked out, his son full recovered.

"So it got back to business as usual," Jazz owner Larry Miller said, "and never really got public."

Jazz point guard Deron Williams sat out the team's Monday practice with an injured right calf, but he hopes to play against the Bucks on Tuesday.

Williams has been bothered by a knot in his calf, which has gotten worse as of late.

Jazz forward Carlos Boozer is scheduled to have a third MRI exam on his injured left knee after a second test was inconclusive.

The third MRI is scheduled for Dec. 29, which means Boozer will miss at least four more games.

"I don't feel comfortable on it," said Boozer, who has already missed seventeen consecutive games.

The Pistons will have a lot of extra cash this coming summer with the contracts of Rasheed Wallace and Allen Iverson expiring, which means they could make a play for Carlos Boozer.

Boozer famously revealed earlier this week that he'll opt out of his contact to "explore" free agency after the season.

He'll be looking for more than the $12.7 million he is scheduled to earn next season.

However, it remains to be seen if Detroit president Joe Dumars wants to keep as much money as possible open for the heralded summer of 2010.

Jazz owner Larry Miller wasn't happy with the comments forward Carlos Boozer made regarding the opt out clause in his contract earlier this week.

He called Boozer's comments "one of the top 10 stupidest things I've ever heard an NBA player do in 24 years."

Boozer hinted that he'd opt out of his current contract at the end of the season to explore his options.

"Carlos knows better," Miller added. "He told [Jazz general manager] Kevin [O'Connor] he just screwed up, but that doesn't fix it, so what do the fans think now?"

Since the initial comments, Boozer said that he didn't mean he was definitely leaving Utah.

Utah forward Carlos Boozer has attempted to clarify the comments he made earlier this week about opting out of his contract this coming summer.

"What I was trying to say to him was, 'Obviously, in my business, like in most people's businesses, you get a chance every now and then to sign a long-term contract and have stability,' " Boozer said. "So the smart thing for me as an individual, obviously, would be to opt out."

Boozer is in the fifth year of a six-year, $68 million contract. He has the right to opt out of the final year and, on July 1, become an unrestricted free agent.

"All I really said ? and it's the same thing I'm telling you guys now ? is that this summer I'll look at the situation," he added. "I'll make a decision then. Honestly, I have my opportunity to opt out and have a long-term deal as opposed to a one-year deal, and it's something I think will be advantageous for any athlete."

So he's leaving open the possibilty of staying with the Jazz.

"Obviously, I want to stay here with the team. I wasn't trying to say I was gonna leave or anything like that. Obviously, I'll look at my options," said Boozer.