Liverpool manager Jurgen Klopp says striker Daniel Sturridge has returned to training but is not ready to feature in a competitive match.
The Englishman last featured for the Reds in December and will not be in the squad to face Sunderland this afternoon.
Divock Origi and Phil Coutinho have also returned to training but just like the 26-year-old, they are not fit to face Sam Allardyce's men.
"We had the problem with Martin Skrtel, a little bit re-injured. He needs another two or three weeks, we have to see," Klopp explained.
"Daniel [Sturridge] is back in training, that's great, since two days ago.
"Everything looks good in this moment. Now it is normal football training – really good for us and good for him.
"The day before yesterday he was together with Phil and Divock. If you see these three players then you know what you have missed for a few weeks.
"With Divock [Origi], Phil [Coutinho] and Daniel [Sturridge] in training, of course you think after five minutes maybe we should take them back into the squad.
"But that's the moment to say 'come on'; there are another three sessions which we can use and they are available for West Ham, that's the idea in this moment if nothing happens in the next session."