The youngster has purchased one adult and one junior ticket to the Wembley showpiece so that one lucky youngster (along with a parent/guardian) will get to enjoy a day out under the Arch for free.
He said: "I remember going to games as a young boy with my dad and I now want a young Swindon fan with their parent or guardian to have a magical experience at the home of football."
To enter, head to the official Swindon Town Twitter account and retweet the relevant post. Harry will then pick a winner and they will be announced at 9am on Wednesday morning.