The striker earned his first call-up for England to be a part of the U20 squad which travelled to the 2011 FIFA World Cup in Colombia, after impressing in his performances for Wigan Athletic in the latter part of the 2010-11 season.
The Merseyside-born player was initially with Everton's youth academy, before switching to Wigan in 2007 where he has since been a regular for their youth and reserve teams.
Callum is a distant relative of former Liverpool, England and Real Madrid star Steve McManaman.