The Celtic players were put through their paces at Lennoxtown on Tuesday as they gear up for the biggest match of the season so far.
Ange Postecoglou's men have cut the gap at the top of the Premiership to just two points, and know they'll leapfrog Rangers with a win on Wednesday night.
A packed Parkhead will be craving a result as incredibly it's over two years since Celtic have got the better of their Glasgow rivals.
