Former Michigan guard Charles Matthews has received some bad news just a few weeks before the NBA Draft.

The Michigan Insider reported that Matthews suffered an ACL tear during a pre-draft workout with the Boston Celtics. ESPN’s Jonathan Givony was then able to confirm that Matthews will have to have knee surgery and will likely miss the entire 2019-20 season.

Matthews had been working toward becoming a second-round draft pick.

Last season, Matthews averaged 12.2 points, 5.0 rebounds and 1.4 assists while appearing in 34 games. All of those numbers were slight dips from the previous year. In the 2017-18 campaign, the guard averaged 13.0 points, 5.5 rebounds and 2.4 assists in 41 contests.

At 6-foot-6, Matthews had good size at the guard position for the NBA and would be capable of defending multiple positions. He was also an efficient shooter, knocking down around 45 percent of his shot attempts through his college career.