Liverpool were on the wrong end of a Bournemouth comeback last weekend as they lost 4-3 at the Vitality Stadium. It also left the Reds third in the table, three points adrift of Chelsea heading into this weekend.
Liverpool manager Jurgen Klopp says no time frame has put on striker Daniel Sturridge's return to action in coming weeks.
"No concern", he said.
"When we analysed the game I found eight players who could have defended the (winning) goal before Loris was involved".
"Is there any influence on the next game?"
West Ham are winless in their last five league games, losing three and drawing two.
Sturridge (calf) returned to training on Friday but is without a timeline for when he can play in a match. "I have no idea", Klopp said.
"We don't have to think about him for West Ham or Middlesbrough". I spoke honestly, as I always try to do and I am not one for making excuses, because the fans can always see through that.
As Liverpool deal with their lack of depth entering the busy December schedule, West Ham United continue to battle to simply stay above the drop.
West Ham now sit one point above the relegation zone and could drop into the Premier League's bottom three before they head to Liverpool on Sunday, live on Sky Sports 1 HD.
This season, however, West Ham seem to be in a freefall.
The 23-year-old, who replaced Simon Mignolet as Klopp's first-choice keeper earlier this season, was culpable for Nathan Ake's last-gasp victor on Sunday when Liverpool blew a 3-1 lead to lose 4-3.
The good news for manager Slaven Bilic is he will have starters Michail Antonio and Aaron Cresswell back for this match.
The intensity from many of their players isn't good enough and they are suffering from a number of injuries.
One player who will be in the side for the visit of West Ham will be goalkeeper Loris Karius, despite criticism being levelled at him for errors in the 4-3 defeat at Bournemouth last weekend.
"It is not important what the name of the player is or the quality of the player, you have to wait until they are back". We are a footballing side and sometimes we use the goalkeeper for this.
However Liverpool suffered their first serious Premier League slip since August last week when they threw away a 3-1 lead at Bournemouth by conceding three goals in the final 15 minutes.
I wouldn't even bother entertaining [1.49] for over 2.5 though as there is much better value to be had by backing both teams to score at around the [1.9] mark.