No. 4 Ohio State will be down a starting forward when it takes on Michigan State Thursday.

Buckeyes head coach Chris Holtmann told reporters on Wednesday that Kyle Young will miss the game against Michigan State because he is in concussion protocol. The forward suffered the injury in Ohio State’s loss to No. 3 Michigan on Sunday.

“Kyle Young will be out with a concussion for the game,” Holtmann said, according to Sports Illustrated. “It’s significant. There’s no minimizing the hit to our depth and team. …I know he’s disappointed, but I think he’s doing well. He’s progressing very well.”

Young has started in 22 of Ohio State’s 23 games this season and has played an average of over 26 minutes per contest. He’s been a key contributor for the Buckeyes all season, averaging 8.7 points, 5.7 rebounds and 1.3 assists per game. He’s also shooting over 55% from the floor and 83.7% from the free throw line.

Ohio State is one of the hottest teams in the country right now, winning seven straight until Sunday’s loss to Michigan. The Buckeyes are 12-5 in the B1G and 18-5 overall this year.

Michigan State comes intp the game with back-to-back wins over Indiana and No. 5 Illinois.