Green had started each of the Wolverines' six games this season. He ranks fifth in the Big Ten with 471 rushing yards and has scored three touchdowns. The Wolverines are No. 55 in the country in rushing yards per game and No. 101 in points per game.
Green had 12 carries for 74 yards against Rutgers before his injury. He also appeared in all 13 games for the Wolverines last season and was the team's third-leading rusher behind Fitzgerald Toussaint and quarterback Devin Gardner.
With Green injured, sophomore De'Veon Smith and redshirt junior Justice Hayes will see increased playing time at running back. Smith has 282 yards on 47 attempts this season, while Hayes has 19 carries for 101 yards.
Hoke also said Monday that Devin Gardner will continue to be the team's starting quarterback. Gardner has started five of Michigan's six games.
Morris has since returned to practice and is likely available to play this week.
Michigan is 2-4 this season and in last place in the Big Ten East with an 0-2 conference record. The Wolverines play Penn State at home on Saturday, followed by a bye week and then a game at Michigan State.
- Dan Gartland