Nigel Pearson is sweating on the fitness of skipper Ian Ashbee ahead of Hull City's clash with Queens Park Rangers.
The veteran midfielder is an injury doubt after being substituted following just 32 minutes of play in the 2-2 draw at Middlesbrough on Saturday.
The 34-year-old complained of soreness in his Achilles and is due to undergo a scan on Monday to assess the damage.
While the injury is not thought to be serious, Pearson admits it is a blow, with Ashbee playing his part in the Tigers' current four-match unbeaten run.
Pearson told the Hull Daily Mail: "It's his Achilles but we'll have to wait and see what the damage is.
"It's disappointing because he's worked very hard to get back to a level of fitness that he's more happy with.
"That's helped him to have an impact on the games recently so it's disappointing for him for sure."
On a more positive note, Pearson believes Manchester United winger Cameron Stewart will prove a useful addition to his squad between now and the New Year when his loan spell ends.
The snow at the Riverside ensured Stewart could not show the full array of his skills on debut but Pearson is expecting the teenager to make an impact in the days to come.
The Hull boss added: "He showed glimpses of a style of player that we've not got.
"He's a young man with a good temperament and I'm sure he'll have an impact for us."