- Squad Number:38
- Date Of Birth:5th July 1999
- Signed On:21st September 2015
- Hearts Debut:22nd August 2015
The 19-year-old has made the breakthrough this year in scintillating style.
Callumn has made the step up from reserve side to the first-team this year, even moving into the dressing room after making his 30th appearance.
The winger enjoyed a fantastic loan at Stirling Albion last season - his second spell at the club - where he scored eight goals in 16 games.
Then, in January, the Alva-born speedster joined Championship strugglers Brechin City.
However, this year he stayed at the club that he joined as a 16-year-old to try and break into the first team - a goal he has certainly achieved.
Morrison's form has seen him called into the Scotland under-20 squad with under-21 boss Scot Gemmill publicly praising his performances.