Reference with a Felony

For one of the schools in my education section of my clearance, I was planning on listing a friend I knew at the school. The problem is that friend was arrested and charged with a felony about 2 years ago. He was a first-time offender so he received only probation and he had to attend some form of program once a week for a year. After he completed the program and probation, his records were recently expunged. I still see this friend periodically and I’m not really in contact anymore with anyone else at the school that I could use as a reference.

Will his background hurt my chances at getting a clearance, both secret and top secret?

No checks are done on the people you list on your application, so there is nothing to worry about and it will not be brought up.