Michigan quarterback Wilton Speight has a broken collarbone and will miss Saturday's home finale against Indiana (3:30 p.m., ESPN), according to a person with knowledge of the injury.

The redshirt sophomore suffered an injury in the 14-13 loss at Iowa on Saturday. U-M coach Jim Harbaugh declined to cite the severity at today's news conference.

But the Free Press has learned that it was more severe than Speight let on after the game. A broken collarbone would knock him out for the foreseeable future.

The website mgoblog.com was the first to report the news.

"It's going to depend on how he feels," Harbaugh said today. "Could be a (game-time decision). We will know based on what the doctors say and how Wilton's feeling."

"As always, per our principle, we don't go into the specifics," Harbaugh said.

The starting duties would likely fall to backup quarterback John O'Korn, who has relieved Speight in blowout losses all season.

"John, Shane (Morris), I would anticipate today, the next couple days, they'd get the majority of the reps," Harbaugh said today, "and that'd be good for them."

Though Speight has started all 10 games this year, O'Korn has significant experience. He started a year and a half at Houston in 2013 and 2014.

Speight was injured in the fourth quarter Saturday and spent the next defensive series on the sideline, getting examined by doctors putting their hands under his shoulder pads.

O’Korn had thrown a bit on the sideline, but then Speight returned for the final series. He threw an on-target third-down pass to Amara Darboh on the right sideline, a conversion that likely would have sealed a victory, but Darboh couldn’t hold on.

In terms of timetable, former U-M tailback Derrick Green suffered a broken collarbone on Oct. 4, 2014 and was just returning to practice for the seaosn finale in late November.