Leeds forward Patrick Bamford could miss the rest of the season with a foot injury.
The Premier League club said the 28-year-old has ruptured a ligament, but will not require surgery.
Club doctor Rob Price added Bamford has had the injury for 12 months and will be out for at least six weeks.
"Despite treatment and a prolonged period of rehabilitation, the injury has progressed from a partial tear to a full rupture," said Price.
With only eight weeks of the season left, Bamford will struggle to make a return as 16th-placed Leeds fight against relegation.