Should a person who committed an illegal sexual act as a kid still be punished and not play in the NFL?

Tony Washington is a hopeful NFL prospect with second round talent, but no team wants him. Every team is afraid of the media zoo that would occur if they signed Washington. He grew up without a dad, a mom who worked two jobs, and in a very tough neighborhood. He was very close to his sister and they had sex, not knowing it was wrong, when they were both teenagers. He went to jail and is registered as a sex offender. I feel that he deserves a second chance. He is not a perpetual rapist and there are plenty of NFL players with a worst criminal record.

The hyperlink to the moving article about Tony Washington:
http://sports.espn.go.com/nfl/news/story?id=5497517