Leeds manager Gary McAllister has been left reeling following the news that defender Alan Sheehan is set for another spell on the sidelines with a recurrence of his hamstring injury.
The Irishman suffered the problem in training last month, two days after being sent off at Swindon on September 13.
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He returned to action as a second-half substitute in the Johnstone's Paint Trophy loss at Rotherham on Wednesday night but limped off after just 10 minutes.
McAllister told the club`s official site: "He`s struggling now - he`ll probably be out for a while.
"We needed to see if he was fit - he did it a few weeks ago, but due to his absence through suspension, it gave him time to get the hamstring right.
"He has been training for a good few days now but he broke down again so that`s a big blow to us."