Ross County defender Alex Iacovitti is set to return for the cinch Premiership clash with Hearts.
The centre-back was a late withdrawal from last weekend's trip to Celtic Park because of illness.
Defenders Connor Randall (ankle) and Jake Vokins (foot) remain on the sidelines.
Hearts will make a late decision on Michael Smith.
The defender has gone off in his last two matches with a tight leg muscle.
Robbie Neilson has no other injury concerns.
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