Who is Grant Mathie, the Sporting Director that was pictured at Celtic Park yesterday?

Celtic recorded a comfortable 2-0 win over St Johnstone yesterday thanks to goals from Giorgos Giakoumakis and Josip Juranovic. The win carries on an impressive run of results for Ange Postecoglou’s side but another talking point in the aftermath of the result was that Graeme Mathie was spotted in the Directors Box...