A Fosroc Scottish Rugby Academy Stage 3 Player, Robbie McCallum was aligned to Glasgow Warriors in the summer of 2019.
The former Loretto School pupil enjoyed a breakout year for Scotland Under-20s in 2019, playing in all bar one of his side's matches in the 2019 Under-20 Six Nations.
His form continued into the 2019 World Rugby Under-20 Championship in Argentina, scoring a superb individual try against New Zealand.
McCallum - who formerly played for Compultence Cisneros in Spain - is also a talented cricketer, having represented Scotland at both under-15 and under-17 level.
Date of birth: 11/06/00
Height: 5ft 9in
Glasgow Debut: 2019
Place of birth: Glasgow