Rangers fell to a 2-0 defeat away to Union Saint-Gilloise on Tuesday as their bid for a place in the Champions League hit a bump in the road - and the Belgian club standing in their way boast a very talented Irishman behind the scenes.
The return leg of the third qualifying round tie is set for Ibrox next Tuesday, with the winners progressing to the playoff round where they will face either Monaco or PSV Eindhoven.
But just who is Union's Sporting Director Chris O'Loughlin? Here is all you need to know about the high-flying Irishman.
