The Celtic centre-back was mysteriously taken off on Sunday.

Christopher Jullien has moved to appease fears over his fitness following Celtic’s 3-1 win over Kilmarnock.
The French centre-back was substituted late on in Sunday’s victory at Parkhead.
Jullien did not appear to be injured, prompting an element of mystery as to why Celtic boss Neil Lennon brought him off.
Lennon later confirmed that Jullien, a £7 million signing from Toulouse this past summer, had complained of a hamstring problem.
But the big defender has stated on Twitter that he’s fine – and here’s how Hoops supporters responded to his post-match tweet.
Celtic spent big money on Jullien and he did seem to endure a difficult start to life at Parkhead.
But he has looked immense in recent weeks and, as things stand, it looks like Lennon has a proper player on his hands.
It remains to be seen whether his hamstring problem keeps him out over the coming weeks.
Lennon’s side host Partick Thistle in a League Cupt tie on Wednesday, before visiting struggling Hibernian

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