Celtic's Callum McGregor thanks Tommy Burns for teaching him 'life lessons' in his new book being released in aid of Glasgow's sick kids.
Callum McGregor: The Making of a Celtic Captain hits shelves in October and a proportion of the money raised from sales will go to Glasgow Children's Hospital Charity (GCHC).
It looks back at the 29-year-old's career so far and how he went from humble beginnings, playing footie with his brother in Glasgow's east end, to leading the first team and playing for his country.