Chelsea boss Guus Hiddink is anticipating a difficult game against Liverpool on Wednesday at Anfield.
In the reverse Premier League fixture at Stamford Bridge this season, under the reign of former manager, Jose Mourinho, Liverpool won 3-1.
Speaking ahead of the clash on Tuesday, Hiddink described the Reds as a very tough side to play against.
"It’s a very energetic team which Klopp has formed," said Hiddink. "They can be very resilient; they were down against Dortmund and made it up in the last second. They have a skilful team but also a strong team."
Hiddink lamented the loss of John Terry, who will not feature against Liverpool and Leicester following his sending off against Sunderland on Sunday.
"He has been training in recent days and of course when he came on the pitch, after being sent off, it’s not the most beautiful face.
"But in training he started to lift his morale and trained okay. Of course not being there in the last two games is a blow for him and for us.
"It’s always good to have key players on board so it’s a big pity. Especially for the home crowd and for the champions Leicester who are visiting us.
"When I make a judgement on how he plays, his fitness and age, then he’s able to play and continue. Where? That’s up to the club. It’s not for me to make declarations on that."
The former Netherlands manager hinted that Terry could go into management after retiring.
"The other day we were sitting next to each other at Bournemouth and we discussed it a bit," the Blues boss recalled.
"Those players, and I have experienced it in the past with Gullit, Rijkaard and Koeman, start thinking about what they should do next.
"They love to be involved in football. John’s always been a leader and tactically you can rely on him, which is important. You can use your experience to help any player or team."
And commenting on his final fixture in charge of the Chelsea, Hiddink explained why he will not be passing on any player-related handover reports to incoming boss Antonio Conte.
"His assistants are watching videos and live games, but because I want to have fair treatment directly for the players I’m not going to give judgement," he said.
"I didn’t want information when I started, everyone has his view, right or wrong. On top of that, they are clever and experienced enough to make their own judgements."