Due to the redevelopment work on Anfield, Jurgen Klopp's side have only had one home game so far this season, enduring away trips to Arsenal, Burnley, and Tottenham Hotspur.
So far, the Reds have overcome Arsenal, but were held to Spurs and suffered a shock defeat at the hands of Sean Dyche's Burnley, leaving them with seven points from their opening four games.
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Now, Liverpool will turn their attentions to Antonio Conte's Chelsea, and one man has got Klopp talking in his pre-match press conference.
That man is, of course, Diego Costa.
It's very rare that a week goes by without Costa being in the headlines, and Liverpool's manager has had his say on the fiery Spaniard, labelling him as a world-class warrior when he's on the football pitch.
Costa has already scored four goals so far this season, with a brace coming at the Liberty Stadium last weekend which helped Chelsea to a 2-2 draw with the Welsh side.
However, he's also caused controversy already this season, with the striker lucky to avoid a red card during the season opener against West Ham United.
Replays showed that Costa had stamped on Hammers goalkeeper Adrian, but luckily for the Blues, the referee didn't punish him.
Speaking about the Spaniard, Klopp has revealed he's already warned his players to be wary of what he does on the pitch, whilst also labelling him as a world-class warrior.
Klopp said: “If other supporters love you it’s not a good sign.
“What do I think of him? He's world class, and that is the best thing football fans can say about you. He is a real warrior on the pitch.
“He uses his body all the time – that is his quality – he was nearly unstoppable against Swansea. He could have been the man of the match. He is strong, no doubt.”
Costa has had run-ins with Liverpool in the past, and given his fiery temper, it's more than likely that he'll be the centre of attention come Friday evening.
The Chelsea striker caused controversy in a previous meeting between the two after appearing to stamp on Liverpool centre-back Martin Skrtel.
It's probably a good thing, especially for the referee, that Skrtel is no longer with Liverpool following his summer transfer to Turkish outfit Fenerbahce.
However, one man who is still at Anfield is Jordan Henderson, and it's well known that Costa and the Liverpool skipper have had heated exchanges in the past.
A video went viral when Costa was caught backing down from Henderson, who was looking more than ready to have it out with the controversial striker.
One thing is for sure, you know with Costa, he is either going to be in the headlines for the right reason, or he'll be in them for the wrong reason.
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