This article is part of Football FanCast's Injury News series, which considers the impact of the latest updates on players' fitness.

Alisson and Mo Salah are both expected to be fit for the trip to Manchester United but the return of Joel Matip could be the biggest lift to the squad.

What's the latest?

Matip returned to full training on Tuesday after overcoming a knock which forced him off during the Sheffield United match a afew weeks ago.

It is good timing for Jurgen Klopp, who seems unsure of who to play alongside Virgil van Dijk in the 28-year-old's absence, with Joe Gomez and Dejan Lovren taking turns against RB Salzburg and Leicester City.

If the Cameroon international continues to train and build his fitness from now until Sunday he has a good chance of returning to the starting line-up, and that could be very important for their chances of success.

As well as that, two key players in Alisson and Salah should also be available for selection, meaning the Reds could have a full-strength side to choose from as they seek to maintain their 100% record.

Big boost

Whilst Liverpool have won each of their eight league games, the defence has looked vulnerable at times, particularly in comparison to last season, with two league clean sheets this time around compared to five at the same stage last year.

That being said, they have still conceded only four goals in the six league games Matip has played, but as soon as he was sidelined that took a turn for the worst.

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Gomez replaced him for the visit of RB Salzburg and failed to deliver, leading to three goals conceded at home for the first time since a cup defeat to West Brom in January 2018.

Lovren is another choice for Klopp, but he has been inconsistent throughout his Liverpool career and hasn't match the standard set by Matip this term, as highlighted by his WhoScored average rating of 7.6 in the Premier League.