Striker Steven Naismith is a major doubt for Hearts' crucial Championship clash with Dundee.
The Scotland international limped off during the Jambos 1-1 draw at Inverness Caledonian Thistle Robbie Neilson 's side slumped to their third successive draw.
Naismith hasn't taken part in training this week and will be assessed before a decision is made.
Boss Neilson said: “Naisy could potentially train on Thursday, although he is more touch-and-go for the weekend.
“We’ll need to see how he is nearer Saturday.”
Right-back Michael Smith was also a notable absentee from training this week but could return to the Hearts ' starting XI this weekend.
Neilson continued: “We expect Michael to train on Thursday.
“We are just letting his problem settle down for a couple of days. He had a tight calf and was feeling his achilles a bit over the last week and it flared up during the game on Friday.
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“He could have played on but the area was getting stiffer. Hopefully we’ve brought him off in time to make sure he’s okay for this weekend — I’m fairly sure we will have Michael.”
He added: "Liam Boyce also had a wee niggle after the Inverness game but he will train tomorrow and should be fine.”