The two clubs drew 0-0 in their first meeting at Anfield. Jürgen Klopp made ten changes to the side, but I expect a stronger side to start at Upton Park on Tuesday night.
The winners of the replay will visit Blackburn Rovers in the fifth round on Sunday 21 February.
Jürgen Klopp is set to take charge after missing Saturday’s 2-2 draw with Sunderland with appendicitis.
Philippe Coutinho, Divock Origi and Daniel Sturridge are all set to return to the squad after recovering from injuries.
Young midfielder Cameron Brannagan will miss the game due to illness.
Dejan Lovren and Joe Allen are both set to miss the game due to injury. They are yet to discover the full extent of the problems they sustained against Sunderland.
Match facts via BBC Sport.
West Ham are yet to beat Liverpool in seven FA Cup meetings (D3 L4), with the most recent encounter prior to the 0-0 draw at Anfield coming in the 2006 final, when the Reds won on penalties after a 3-3 draw.
However, the Hammers have won three of their last five meetings with Liverpool, including two league victories this season – a 3-0 win at Anfield back in August and a 2-0 victory at home in January.
Liverpool are yet to score in three matches in all competitions against West Ham this season (270 minutes), while the Hammers are looking to keep a fourth clean sheet against the Reds for the first time in a single campaign.
West Ham have lost just one of their last 10 FA Cup games at home (W5 D4) – a 2-1 defeat by Arsenal in January 2010.
I expect Jürgen Klopp to play a mixture of youth and experience. I think he will start the likes of Brad Smith, Stewart, Teixeira and Ibe, along with senior players such as captain Jordan Henderson, Emre Can and Christian Benteke.
I would like to see goalkeeper Danny Ward get a start ahead of Simon Mignolet. I think Ward deserves a chance after Mignolet’s recent performances.
I’d also like to see Daniel Sturridge feature tomorrow night. Liverpool have certainly missed his goals this season, and hopefully he’ll help us progress into the next round of the competition.
You just don’t know what you’ll get with both sides. West Ham and Liverpool have both been inconsistent this season. It’s a tricky game to predict, but I’m going for a 1-1 draw. Penalties to be required.
My predicted lineup: Ward, Clyne, Caulker, Toure, Smith, Stewart, Can, Henderson, Teixeira, Ibe, Benteke.
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