Redshirt junior linebacker Jake Ryan had surgery today to repair a torn ACL he suffered nine days ago in spring practice, head coach Brady Hoke said. Hoke spoke to the media after the Wolverines' eighth session.
Hoke doesn't know when Ryan could potentially return to the football field, noting everybody is a little bit different in their rehab.
"Nine months to 12 months, some people say," he said. "Some people say six to nine months. I think it depends on the individual. We hope he's back next year. We're being very optimistic. But I can't make those predictions."
With Ryan out, Michigan has moved junior Brennen Beyer from weakside rush end to strongside linebacker, a post Beyer played as a backup to Ryan in 2011. He spent the 2012 campaign, however, at defensive end.
"We moved Brennen over there a little bit because he's played some for us, and gives us another body," Hoke noted. "Brennen is a smart kid. He has a high football intellect, a high educational intellect.
"He's a kid that loves to play. I think he's a guy that has really changed his body, continues to physically. And he can handle anything, especially from the mental process."
Hoke also mentioned that players such as fifth-year senior linebacker Cam Gordon are competing with gusto, though they didn't need Ryan going down to bring out their best.
"They had that impetus anyway because of the competition we want to have," He said. "I don't think Cam is doing anything differently than he did before the injury.
"I don't think they've changed their work habits, their study of the game, their work ethic."
Speaking of injuries, redshirt freshman strongside end Chris Wormley has returned to practice after missing all of last year with a knee injury, and he's impressing.
"The healing process is done but the mental process of getting back on the field and wanting to get back on the field ... I think some guys have a shyness but Chris has really come a long way," Hoke said.
Meanwhile, redshirt freshman linebacker Kaleb Ringer (knee) is practicing a little bit more and more with each week and redshirt sophomore offensive lineman Chris Bryant (leg) is also working his way back from injury. Classmate Antonio Poole, though, remains limited with what he described last year as a pectoral/chest injury.
Hoke said there is no update on suspended senior punter Will Hagerup.