Fernando Torres will have a scan on Monday to determine the extent of the hamstring injury he sustained at Villa Park.
The Spanish striker was forced to limp out of Sunday's goalless stalemate and is now waiting to discover how long he will be on the sidelines for.
"We don't know how long Torres will be out for yet," said manager Rafael Benitez. "We'll have to wait for the results of the scan on Monday.
"It could be he is out for seven to ten days, but until he has the scan we won't know."
Stay tuned to Liverpoolfc.tv on Monday for the latest news - plus first news of any new arrivals on transfer deadline day.
