Michigan left tackle Grant Newsome may find himself sidelined for an extended period.

The sophomore starter left Saturday's game against Wisconsin in the first half with what appeared to be a right knee injury. Head coach Jim Harbaugh spoke after the game and didn't mince words in contemplating the consequences, according to Nick Baumgardner of Mlive.com.

"It doesn't look good," Harbaugh said. "He was blocking on the edge and, what he told me, was he got cut right at the knee - I don't know if it was a helmet or what it was."

While it hasn't been confirmed, Harbaugh expects Newsome to go under the knife.

"Yeah (I think) a surgical procedure will be needed," he added.

Newsome has started every game for the Wolverines at left tackle this season. He was replaced by Juwann Bushell-Beatty, who will likely be the de facto starter in Newsome's absence.