Clemson will officially be without linebacker Barrett Carter on Saturday vs. Syracuse, the program has announced.

That news was first reported by TigersIllustrated earlier in the day. According to that report, Carter is dealing with a concussion.

Clemson has limited options in replacing Carter. Malcolm Greene is listed as his backup at the nickel/SAM position, but Greene hasn’t played on defense since the Louisiana Tech game. He did play special teams snaps against Florida State, but missed the previous 3 games due to injury.

Linebacker Trenton Simpson could slide over to the SAM spot to fill the role. He played that position a year ago before switching to WILL linebacker for this season.

Carter likely would have spent some time matchup against Syracuse tight end Oronde Gadsden, who is the Orange’s leading receiver this season. He has 31 catches for 507 yards and 5 touchdowns on the year.

It’s a huge loss for the Tigers against an undefeated Syracuse team. The Orange also have the ability to pressure the edge in the running game with quarterback Garrett Shrader and running back Sean Tucker.

Kickoff is at 12:00 p.m. ET on Saturday afternoon.