"You have to make them favourites. The Ipswich fans created a fantastic environment and made it tough for us," he commented after the Hammers 1-0 defeat at Portman Road.
"But if you think that was a good atmosphere wait until you see Tuesday night.
"The place will be jumping and it will be a different type of game. The fans will be absolutely essential at Upton Park.
"We'll see how they cope in what will be a hostile stadium."