Posted 20th July 2013 at 01:54 am
The West Bromwich Albion Scotland U21 international joined Blues in July 2013 on a season-long loan.
Born in Glasgow, the young playmaker began his footballing career with Dundee United before moving to the Baggies for an undisclosed fee in January 2012.
During his time at the Hawthorns, Allan spent spells out on loan with Portsmouth and MK Dons, where he made a total of 28 starts and scored two goals. He has yet to make his first-team bow for West Brom.