By North-west correspondent Alex Stevens

Daniel Sturridge has been looking “impressive” in training, according to Jurgen Klopp.

The injury-plagued striker was an unused substitute against Sunderland on Saturday and is set to be named in the Liverpool squad that travels to West Ham for Tuesday’s FA Cup fourth-round replay.

Sturridge has not played since suffering a hamstring injury against Newcastle in early December but he is in contention to start at Upton Park.

Manager Klopp revealed at his media briefing on Monday that the plan was for the England international to play at least 15 minutes against Sunderland but that had to be abandoned following the first-half injuries to Dejan Lovren and Joe Allen.

“Daniel was fit enough to be on the bench on Saturday and was impressive on Friday in training,” explained Klopp. “We had hoped he would play for 15 minutes but it didn’t happen. We would have liked to, but the game had a different story with a few early changes.”

Football Insider revealed on Sunday morning that Coutinho and Origi are set to join Sturridge in the squad that travels to Upton Park.

Red hot: Coutinho is set to return to the squad against West Ham

Red hot: Coutinho is set to return to the squad against West Ham

Klopp confirmed the returning trio are set to be involved but will not start them all after their extended absences.

“I hope to have Divock and Philippe Coutinho in the squad tomorrow. It is complicated because extra-time is possible. They can’t all start together because then we have to make three changes.”

The trio will all be assessed in training on Monday afternoon before the manager selects his squad for the FA Cup fourth-round replay against West Ham.

The fixture has suddenly taken on greater significance for the Merseysiders after they collected just one point from their last two Premier League matches to leave them well adrift of the top four.