MANHATTAN, Kan. (AP) — A Manhattan, Kansas, businessman who once was a backup quarterback at Kansas State faces November sentencing after admitting in court that he had improper sexual contact with a former high school student.

Zachary Burton, 38, pleaded guilty Monday in Riley County to one count of unlawful sexual relations.

Authorities say the female student went to Riley County High School, where Burton was an assistant boys’ basketball coach and substitute teacher.

Burton owns a business called Fieldhouse Development Inc.

Burton’s sentencing is scheduled for Nov. 15.