Liverpool legend Jamie Carragher believes the club must sign another forward in January.
The Reds are eight points clear at the top of the Premier League.
But Carragher thinks another weapon up front will solidify their chances of winning the title.
He told Viasport: "I think Liverpool still lack one player which is an attacking player to really support the front three and almost make it like a front four.
"At the moment there's still a big difference when one of the front three don't play.
"We saw that at the weekend again when Salah was out that time Alex Oxlade-Chamberlain played in the front three and that didn't work. We've seen [Divock] Origi that doesn't work.
"Maybe there's talk of a man in the Bundesliga coming to England from Borussia Dortmund, maybe he's someone who Liverpool may be looking at in Sancho who a lot of other Premier League clubs are looking at.
"There has been some great signings for Liverpool in the past [in January]. You think of [Virgil] van Dijk, Luis Suarez, Daniel Agger was a great player for Liverpool, Daniel Sturridge is another one.
"I would like to see an attacking player come in someone with a bit more quality, maybe someone who could help them in the coming months going forward.
"I don't think it's an area which Klopp really looks at but I would expect it to be a really big summer for Liverpool especially considering they didn't sign anyone last summer."
