Leicester City striker Jamie Vardy is a major doubt for tomorrow's trip to face Birmingham at St Andrew's.
The 25-year-old, who has been an ever-present in the City side in the league this season, is struggling after being laid low with illness.
Vardy, who has scored four goals in 11 appearances since joining in a record £1million move from Fleetwood Town, has been unable to train.
City manager Nigel Pearson said he would check with his medical staff today before deciding whether to leave Vardy out completely for the trip to Birmingham.
"He went off in the last game and he had run himself into the ground," said Pearson.
"He has been ill for the last week or so. I am not totally ruling him out for the weekend, but clearly when you have been ill for a week or more it is going to weaken him somewhat.
"We will have to see how he is. I will make a judgement having spoken to our medical staff and the doctor to see if they feel he is able to be a part of it. If he is not, then we will make sure he is available for the next game."
Pearson said he may have to trust the advice of his staff rather than the player's word as Vardy is so keen to play.
"I think regardless of how he is himself, I know he will always try," he said.
"He is not the type of player to try to pace himself, he always wants to give everything he has got.
"Sometimes we have to take decisions out of players' hands, if we feel it is in their best interest not to be involved.
"I don't think Jamie Vardy would ever rule himself out of any situation. He is that type of lad. But it may be that we have to rule him out for his own good.
"But I am not going to do that quite yet because, if he is able to play some part, then I would like him to be involved."
Defender Sean St Ledger is City's only guaranteed absentee from the squad, which has recorded five consecutive victories.
Pearson said Paul Gallagher would be considered for action after his loan spell at Sheffield United expired.
Pearson said United had tried to extend the loan and he has not ruled out Gallagher going out elsewhere temporarily.
"It was good for him to get out on loan," said Pearson.
"Unfortunately, Sheffield United were unable to come up with the finances to extend the loan and that is why he is back. But while he is back, we will utilise him how we see fit.
"There may be scope for him to go out on loan again."
