Chelsea captain John Terry is adamant that Didier Drogba will still give defences nightmares in his second spell with the club.
Drogba rejoined Chelsea last month, signing a one-year deal after his contract with Turkish side Galatasaray expired.
The Ivory Coast international enjoyed a magnificent first stint at Stamford Bridge, winning the Premier League three times, the FA Cup on four occasions and the UEFA Champions League in 2011-12.
A prolific eight-year spell ended with Drogba scoring over 150 goals for the London outfit, but at 36 there are doubts over whether the former Marseille man can reproduce anything close to that sort of form on his return.
Drogba is likely to be the back-up to Spain's Diego Costa - who arrived from Atletico Madrid in July - with Romelu Lukaku, the player long touted as his heir apparent, sold to top-flight rivals Everton.
But Terry remains confident that the move will prove to be a good one for Jose Mourinho's men, and feels Drogba's experience could have a positive impact on Chelsea's younger players.
"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 [centre-back] Kurt Zouma and the other young players he's playing against."
It has been a transfer window of great change for Chelsea, who - in addition to Drogba and Costa - have recruited Cesc Fabregas and Filipe Luis.
Meanwhile, long-serving players Ashley Cole and Frank Lampard have moved on, with the latter set to play for Manchester City on loan after joining affiliate MLS franchise New York City.
But, while Terry is saddened by the departures of that pair, he feels fans should be excited by the club's future.
"It just doesn't seem right to see them [Cole and Lampard] in different shirts," he added.
"The club are evolving. One day we'll all be gone.
"It's time for these players to continue to keep winning trophies for this club and keep the fans and owner happy.
"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."
|Southampton need three January signings, says Watson|
|Liverpool can make Champions League, says fanzine editor|
|Walsh: Hull clash crucial for Leicester|
|Toure, Aubameyang and Enyeama make shortlist for African gong|
|Docherty backs Chelsea to win two-horse race|
|Liverpool could benefit from Hyypia influence - Scales|
|Saudi Arabia name Asian Cup squad|
|Forty-year-old Cahill no problem for Postecoglou|
|Wenger criticism baffles Redknapp|
|Leicester must strengthen in window - Walsh|
|United not title contenders - Docherty|
|Koeman: Southampton youngsters will get a chance|
|Dyche empathises with Liverpool striker crisis|
|Cagliari turn to Zola|
|Rooney thanks Van Gaal for Christmas break|
|Cruzeiro offer Paulinho Tottenham exit chance|
|Carlisle´s wife grateful to Burnley|
|Katebe called up to Zambia AFCON squad|
|Cape Verde name AFCON squad|
|Finke names much-changed Cameroon squad|
|Grant omits World Cup troublemakers for AFCON|
|Blackpool striker Ranger goes AWOL|
|Allardyce relishing Mourinho meeting|
|Ashley fails to increase Rangers stake|
|Crystal Palace v Southampton: Koeman calls for focus|
|Warnock targeting striker in January|
|Chelsea v West Ham: Adrian vows visitors will attack|
|Heskey signs short-term deal at Bolton|
|Everton v Stoke City: Martinez eyes strong form|
|Juninho defends David Luiz|
|Burnley v Liverpool: Dyche defends Rodgers ahead of Turf Moor test|
|Arsenal v QPR: Wenger eyes festive momentum|
|Liverpool are growing in confidence, says Rodgers|
|Redknapp: Austin future could depend on survival|
|Martinez wants Everton consistency|
|Barca want Neymar until 2020, says agent|
|Jones undeterred by pressure of Liverpool starting role|
|Allardyce ´knows how to beat managers´ - Carroll|
|Jones playing for a new contract|
|China select Evergrande spine for Asian Cup|
|A-League Preview: Koren tips City to build|
|Khedira keen to fight for Real spot|