Reading keeper Graham stack has suffered an ankle injury in training with Leeds United.
The on loan goalkeeper has been with Leeds since the end of October and has been a regular starter since joining, making 10 appearances.
Stack now faces up to a month on the sidelines, which will be frustrating for the player as his loan contract is due to end on January 27th meaning he will miss the busy Christmas period but could still make one last appearance before the end of his loan deal.
The situation leaves Leeds in a tight spot as fellow loanee keeper, Tony Warner, is set to return to Fulham on January 2nd.
However, former first choice keeper, Neil Sullivan, who has been out on loan at Doncaster Rovers; has been called back to take his place in the team for the first time since Dennis Wise and Gus Poyet took charge of the club.