A group of Celtic fans in Norway were so taken aback at bumping into former club boss Ronny Deila in a pub - that they stormed him while chanting a well-known song.

The hilarious moment was captured on camera by Hoops fan Jamie Reilly, from the east end of Glasgow, who is in Trondheim today as Celtic prepare to take on Rosenborg for the second game of the Champions League Third qualifying round.

The ten-second clip shows 30-year-old Jamie and a group of his pals gathered around the now Vålerenga boss to take a selfie.

They then break into the chant “Ronny Deila, Celtic through and through” as the embarrassed former footballer tries to get away from the group while attempting to hide a grin.

The clip is racking up the views and comments as other Twitter users commend the lads for their light-hearted humour.

The Norwegian coach took charge of Oslo side Vålerenga after quitting the Parkhead side in the summer, after clinching two titles.