Jon thinks for a moment and decides to help Zoe out. She really does want to join a football team.
So he leaves her room and makes a wish. "I wish that our school had football team for girls too."
He then remembers that after the personality swap was over, Zoe wouldn't be on the team anymore, but it was still a good thing for other girls.
The stone glowed and Jon walked back in to Zoe's room.