A team spokesman told ESPN.com that Miller will play against the Illini.
Miller will be listed as the Buckeyes' starting quarterback ahead of Joe Bauserman on the depth chart, which will be released later Monday. Miller has started Ohio State's last three games after Bauserman started the first three.
The freshman had a breakout performance in the first 2½ quarters at No. 14 Nebraska, recording 91 rushing yards on 10 carries and completing 5 of 8 passes for 95 yards and a touchdown. He suffered the ankle injury midway through the third quarter and did not return.
Ohio State led 27-13 at the time of Miller's injury but went on to lose 34-27. Bauserman completed just 1 of 10 pass attempts in relief of Miller.
Adam Rittenberg covers Big Ten football for ESPN.com. He can be reached at firstname.lastname@example.org.