Sean Dyche said he was "really disappointed" to have lost goalkeeper Nick Pope to injury in Burnley's 1-1 Europa League draw against Aberdeen, admitting the problem looks serious.
Pope was withdrawn after just 14 minutes at Pittodrie, receiving a knock to his shoulder and forcing Dyche to send on Anders Lindegaard in his place.
Lindegaard was on the field for just five minutes before Gary Mackay-Steven gave Aberdeen the lead from the penalty spot, but Sam Vokes rescued Burnley with a goal 10 minutes from time to level the tie at 1-1 going into the second leg.