The National Literacy Trust's Reading the Game is an initiative to promote reading, writing, and speaking and listening for all ages through the motivational power of sport. They've just added a new section to it - football-related literacy resources by children's writer Tom Palmer. There's a toolkit of ideas for activities and games, reading and writing exercises, stories and book reviews. It does feature English Premier League stars in places, but could easily be adapted to fit the Scottish football scene. There's also a competition.
We have a good collection ourselves of football stories for children and our Books for Boys webpage has reviews of some of them on its football page.