Dundee United's Gary Mackay-Steven has been sidelined for at least a month with a fractured hand.
The 22-year-old, who joined United last July, was replaced by Richie Ryan during United's 2-1 win at Ross County on Saturday.
"At the time he didn't know it was broken, his hands were so cold," said boss Peter Houston.
"He knew he was hurt and he came off. We took him to the hospital as soon as we got back to Dundee and unfortunately he's got two wee broken bits in his hand.
"He's going to be out for a minimum of four, maximum of six weeks. It's a blow for us and a blow for the boy because he's just come back from a knee operation.
"It's not been a great start to the season for him. These things happen sometimes in football."
United face Motherwell at Tannadice on Tuesday evening.