The source said Willis, who has not played this season, has not healed from a knee injury he suffered last season.
Willis has two year of eligibility remaining, but it is unclear when he will play football again.
The former Franklin Central standout and Indiana Mr. Football runner-up also dealt with injuries during his freshman season, when he rushed for 607 yards and six touchdowns. Willis had three games with more than 100 yards rushing that year, including a 152-yard, two touchdown outburst at Michigan. He was named to the All-Big Ten Freshman team following the season.
As a sophomore last season, Willis started twice more and played in the team’s first four games before his knee injury ended his season.
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