Liverpool boss Rafa Benitez says the jury's out over Gianfranco Zola's ability as West Ham manager.
He said: "He is learning to be a manager as games go by, and that is not easy.
"Zola was a fantastic player, but to be a manager in England is totally different. He has been under pressure, but he is clever and he has brought in some experienced people onto his staff.
"He has had problems, but West Ham won their last away game at Sunderland and that has helped. They will be confident and they can be dangerous.
"It will be difficult for West Ham to get anything at Anfield, but we have had experience already of teams coming here and being organised and defending well."