Cincinnati Bengals linebacker Vontaze Burfict underwent microfracture surgery, according to a report from ESPN.

The procedure is a serious one for knees that have suffered cartilage damage but the linebackers surgeon told the NFL Network he’s hopeful Burfict will be fully recovered by training camp.

Burfict’s knee was problematic all season and the 24-year-old even underwent arthroscopic surgery during the season before getting placed on injured reserve.