Nottingham Forest are waiting to discover the extent of the hamstring injury Paul Konchesky suffered against Preston.
The on-loan Liverpool full-back was forced off with the problem midway through the second half of the 2-2 draw at the City Ground on Tuesday night.
Reds boss Billy Davies said: "It is a slight hamstring, hopefully it will not be too severe."
He added: "It is tough to say accurately right now."
Konchesky is likely to miss the trip to Millwall on Saturday.
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