The big Celtic centre-back struggled away to Rennes this evening.

Celtic fans on Twitter are tearing into Kristoffer Ajer.

The Hoops kicked off the group stage of their Europa League campaign with a 1-1 draw away to Rennes.

The French side took the lead from the penalty spot after the Celtic centre-back hauled down Mbaye Niang in the first half.

In truth, Ajer struggled with the Senegal hitman all night and here’s how Bhoys fans reacted to their defender’s display.

Ajer, valued at £15 million by Celtic [Leicester Mercury], is a fine, fine defender but this was one to forget for the big Norway international.

Thing is, he’s only 21 and no doubt he will learn from the experience. The foul on Niang was easily avoidable, an example of naivety from the young lad who will grow as a result of the mistake.

Ajer, arguably Neil Lennon’s best player this season overall, will be hoping to bounce back with a solid display when the Scottish champions host Kilmarnock on Sunday.

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