John Terry insists Didier Drogba is still a "nightmare" to play against as the veteran striker embarks on his second spell at Chelsea.
Terry approves of Drogba's return to Stamford Bridge on a one-year deal and insists he continues to show the combative spirit that marked his first eight-year spell at the club.
"Didier's still the same. He's been a nightmare to play against in training. He's still physically strong, sharp and hungry as well," Terry told Chelsea TV.
"It's important Didier is here because he brings that mentality of wanting to win every day and that rubs off on people like Kurt Zouma and the other young players he's playing against."
While Terry mourns the loss of Frank Lampard and Ashley Cole - "it just doesn't seem right to see them in different shirts" - he insists fans should be pleased with the business done in this window.
Diego Costa, Cesc Fabregas and Filipe Luis have been brought in at a cost of £75million, in addition to Drogba's arrival on a free transfer, while defender Zouma and goalkeeper Thibaut Courtois have returned from loan spells.
"The club are evolving. One day we'll all be gone," Terry said.
"It's time for these players to continue to keep winning trophies for this club and keep the fans and owner happy," he added.
"If I was a Chelsea fan I'd be impressed from what I have seen so far from Diego, Cesc, Filipe and all the boys that have come in like Kurt as well."
Meanwhile, former Chelsea defender David Luiz is ready to put his World Cup nightmare behind him by helping Paris St Germain make a push for the Champions League trophy.
The 27-year-old Brazilian, who has joined French champions PSG from Chelsea for £50million, said: "If the World Cup had finished at the quarter-final stage then you wouldn't be asking questions about my ability.
"I've had time to digest the end of our World Cup and now I'm ready to do everything to help PSG."