Liverpool extended their unbeaten start to the season with a remarkable win at Manchester United on Sunday.

Mohamed Salah scored a hat-trick and Naby Keita and Diogo Jota also netted as the Reds secured an historic 5-0 win at Old Trafford in the Premier League.

Liverpool now face the fourth of seven games in 23 days when they take on Championship strugglers Preston North End in the Carabao Cup on Wednesday.

And here we look ahead to the changes Jurgen Klopp could make when his team are next in action.

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Changes incoming

Liverpool, as with the third round win over Norwich City, are expected to rotate heavily for the match at Deepdale.

Caoimhin Kelleher, should he recover from the illness that ruled him out at the weekend, will be in goal, with Adrian on standby.

Kostas Tsimikas is due to line up at left-back, and while teenager Conor Bradley impressed on the opposite flank in the last round, Neco Williams is favourite to start at right-back.

Joe Gomez is poised to be one centre-back, but who partners him is interesting. It was Ibrahima Konate at Norwich, but the Frenchman featured at Old Trafford.

Joel Matip was rested to the bench while Nat Phillips is patiently awaiting his first outing of the campaign. Virgil van Dijk will almost certainly not be involved.

Midfield headache

There is little wriggle room for Liverpool in the engine room given the injuries that are now racking up.

Thiago Alcantara and Harvey Elliott are definitely out, while Fabinho - who missed out at United - won't be risked and neither James Milner nor Naby Keita, both injured at the weekend, are likely to be fit.

That leaves three senior centre-backs in Jordan Henderson, Curtis Jones and Alex Oxlade-Chamberlain.

Henderson is due a breather. And that could mean another chance for Tyler Morton, the 18-year-old who impressed during the second half at Norwich.

Alternatively, a switch to 4-2-3-1 could open up further options going forward.

Mane time?

Divock Origi and Takumi Minamino are certainties to start having both netted at Norwich in the third round.

But doubts over the availability of Kaide Gordon - who hasn't featured for an Academy side in four weeks due to injury - means Liverpool may have to dip into their senior ranks up top.

That could mean action for Sadio Mane, who only had a late runout from the bench against United.

James Balagizi, the Academy attacking midfielder, is another option, while fellow teenager Mateusz Musialowski could also been involved.