Burnley goalkeeper Nick Pope appears to have sustained a "serious" shoulder injury during the Clarets' 1-1 Europa League qualifying draw at Aberdeen, says manager Sean Dyche.
Pope was forced off after colliding with Dons' striker Sam Cosgrove.
The 26-year-old was part of England's World Cup squad and won his first cap against Costa Rica in June.
"Nick has gone to hospital and it certainly looks more serious than not serious at this stage," said Dyche.
"It was a bit of a needless challenge.
"When he responds to stop the ball going in, I think the lad has caught his arm and knocked it back, so we'll just have to wait and see."
Pope's injury, coupled with Tom Heaton's calf problem, leaves Burnley with only two fit senior goalkeepers.
Anders Lindegaard, who made his Burnley debut as Pope's replacement on Thursday, is likely to start the return leg at Turf Moor next week, while Adam Legzdins is also available to Sean Dyche.