Frank Lampard believes Chelsea's rediscovered fighting spirit will have sent a shudder through the rest of Europe's top clubs.
Chelsea remain unbeaten under interim coach Guus Hiddink after their 2-2 draw against Juventus in Turin on Tuesday night meant they progressed to the Champions League quarter-finals 3-2 on aggregate.
"Maybe no-one will want to face us the way we are playing," the England midfielder said. "When you get to this stage your away performances are important and it is a good sign we scored two against Juventus."
He added: "Away games may not always be the most beautiful of performances and you have to be very strong at certain points of the game. You have to be very clever and we weren't like that in the group games.
"Now is the crunch time and we did very well. We have had quality and spirit in the squad for the past five years but at times this season we didn't have and it showed.
"But against Juventus and the previous five games we have shown we are together and, when we have the spirit combined with our quality, we can do whatever we want."
Juventus midfielder Tiago believes his former team-mates can go on to win the competition.
"I am disappointed that we are out, but I believe and hope Chelsea go all the way now," he said.
"They still have very good players and they showed against us that they never give up. I wish them all the luck, I loved my time at Chelsea."
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