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Liverpool are sweating over the fitness of Roberto Firmino ahead of their trip to West Brom on Sunday.

The Brazilian forward, who scored the winner at Stoke last weekend, did not take a full part in training on Friday, as the Reds limbered up at Melwood.

Firmino spent the majority of the session going through some fitness work with head of fitness and conditioning Andreas Kornmayer, and speaking to coach Jurgen Klopp.

The 25-year-old was initially rested in the Potteries last weekend, before stepping from the bench to fire home in the second half.

(Image: Liverpool FC via Getty Images) (Image: Liverpool FC via Getty Images)

Klopp had elected to leave Firmino out of his starting XI on the advice of his fitness coaches, who were worried he was entering the 'red zone' after a hectic recent schedule.

Firmino has missed just two games for Liverpool in the Premeir League this term and took part in Brazil's recent World Cup qualifiers.

The belief is Firmino could be susceptible to a muscular injury at present, and the club are taking preventative measures to ensure that doesn't happen - especially with Adam Lallana still to return and Sadio Mane out for the season.

(Image: Liverpool FC via Getty Images) (Image: Liverpool FC via Getty Images) (Image: Liverpool FC via Getty Images)

Emre Can was back in full training, while Daniel Sturridge was all smiles - despite Klopp refusing point-blank to offer any assurances over his Liverpool future on Thursday.

Klopp declined to answer any questions about the 27-year-old at his press conference, other than saying: "It was not an easy season so far but there are still six games to go and he is back. I’m happy about this.

"But I don’t think a second with the actual squad about the next season.

"We plan different things, like transfers, as you can imagine. But who will leave we have never thought about it."