Celtic on this Day – featuring six pre-Christmas ... In fairness to the English striker, it was a clean tackle on Kristoffer Ajer, but Alan Muir adjudged the tackle to be endangering the safety ...

Signed as a teenager after a trial with Celtic in 2016, Kristoffer Ajer grew into one of the best defenders in the Scottish Premiership. The Norway international won three trebles in a row with ...