Former Celtic star Aiden McGeady has lifted the lid on the tough talking behind the scenes at Parkhead kept him in check early in his career.
McGeady made his breakthrough into the Celtic first-team during Martin O'Neill's tenure as boss in 2004, surrounded by veterans including John Hartson, Alan Thompson and Neil Lennon.
Now 35, the Sunderland winger admits cleaning boots and washing kits served him well as an apprenticeship in the game.
