Young is done for the season, and will face another knee operation.
"Unfortunately, Kordell is going to have season-ending surgery,'' Schiano said. "I have every bit of belief he'll get surgery, get well, and be a productive player here. That's the kind of guy he is.''
A valuable third-down back, Young also provided a change of pace in the running game and was a threat catching the ball.
The 5-foot-9, 190-pound Young was injured in the second quarter of the 31-0 win against South Florida. He was fighting for extra yards when a South Florida defender fell on Young's leg and caused it to bend awkwardly.
Young led the Scarlet Knights in rushing last season with 554 yards and three touchdowns last season. But his recovery from offseason knee surgery was slow, and he was not at full health when training camp began.
There were also questions as to whether Young's knees could handle the pounding of being an every-down player, so he was cast into the third-down role this season. He carried nine times for 28 yards in seven games, and also had seven catches for 48 yards. But his true value was in pass protection.
With him no longer available, Schiano said the Scarlet Knights will have to re-think the use of starting running back Joe Martinek.
After Young's injury against South Florida, Martinek took over as the third-down back. But Schiano does not want to wear his workhorse out, so it could open the way for sophomore Jourdan Brooks or freshman De'Antwan Williams to gain more playing time.
"It definitely has an effect,'' Schiano said. "We're going to have to mix and match. Joe can do it. Jourdan can do it. I think we just have to watch reps on first and second down.''
Young is the second third-down back the Scarlet Knights lost this season. Mason Robinson was lost to a knee injury early in the season.