Cammy Devlin could miss a number of key Premiership fixtures for Heart of Midlothian, including the Edinburgh derby at Easter Road, after a scan on an ankle injury.

The Australian midfielder picked up a knock after coming off the bench in the second half of the 1-0 win at Kilmarnock on Saturday, head coach Steven Naismith confirming afterwards that he was struggling to move towards the end of the game.

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Earlier this week Devlin was in a protective boot and was sent to a scan which showed more damage than the player thought. He has a similar issue to the one which kept Nathaniel Atkinson out for more than two months but his issue is not as severe.

"We ended up getting him scanned just as a precaution and it's come back that there’s more damage than he was feeling the day after he came back in," Naismith said. "So he is likely being at least a month."

Across the next month Hearts face trips to Aberdeen and Celtic before a game with St Mirren prior to facing Hibs on December 27. The team then play Ross County at Tynecastle Park before travelling to Livingston for the final fixture prior to the winter break.

Liam Boyce, who was replaced at half-time of the win over Kilmarnock, remains a doubt having missed the loss to Rangers.

“Friday will be a big day for Boycie," Naismith said. "We will wait and see. It’s a race against time."

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