Former Chelsea defender Frank Leboeuf has claimed Blues boss Frank Lampard could drop new signing Kai Havertz for his side's clash with reigning Premier League champions Liverpool.
Chelsea host Jurgen Klopp 's men on Sunday and Leboeuf believes Havertz may not start the game after a lacklustre display in his debut against Brighton.
"You need sometimes [time] to adjust and I can accept that," Leboeuf told ESPN FC. "The problem is you have a big game against one of the contenders and you're going to play at home.
"If you lose the second game of the Premier League against Liverpool, it's going to tell you what you're going to expect for the rest of the season.
"So I think Frank Lampard should line up the players who are ready, who are ready to compete. If Havertz is not ready, if he's physically not ready, he shouldn't play because it's a big game that they have to play on Sunday.
"Chelsea have to show that they can fight with Liverpool."
Daily Star Sport columnist Paul Merson believes Havertz has "got a lot to do" to prove his worth after his display against the Seagulls.
Werner details Lampard phone call which made him to join Chelsea over Liverpool
Writing in his latest column, Merson praised fellow new signing Timo Werner, saying: "Chelsea have got to make a statement against Liverpool this weekend and with Timo Werner they just might!
"You would not want to be marking Werner if you were a defender. He is a prime example to any young player. He is always on the move, always making runs, and he consistently makes unselfish runs too to free up space for others.
"I can’t see how he’s not going to score loads of goals for Chelsea. He will play every week. He’s got to be a contender for the Golden Boot. Werner will give Liverpool a test.
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"I think both teams would take a draw right now because you can’t afford to lose too many games if you want to win the league. But Chelsea have to go for it and lay down a marker. They have made some great signings, now it’s time to show what they are made of.
"I didn’t think they were that great against Brighton. I’m gutted for Ruben Loftus-Cheek. He doesn’t look recovered from his injury and may not get another chance any time soon.
"And Kai Havertz has got a lot do. He didn’t play well. He didn’t even look interested at times. When he came off, he didn’t really seem to care. It was strange."
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