The Rovers striker was a surprise absentee from the 18-man squad at the John Smith's Stadium, but it was explained afterwards by the manager that the Turkish international had picked up a strain in training.
"It won't be a long term with him but it is with the muscle so you don't know how long they are going to be," said Berg.
"We'll just have to wait and see, of course we want all our players back competing for a place in the team."
Rovers are back in action this Saturday when Ewood Park hosts Birmingham City.
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