Hazard praised Giroud's ability to hold the ball and link play, saying: "He is a target man and maybe the best in the world".
"We are very unsafe in the offensive phase, but in the defensive phase we need to improve", Sarri concluded.
The Blues boast a 100 per cent record after five Premier League games this season.
Eden Hazard can score 40 goals this season and win the Premier League Golden Boot, according to Chelsea boss Maurizio Sarri after the Belgium forward scored a hat-trick to maintain the club's flawless start to the season.
And former Napoli manager Sarri believes Hazard has enough of an eye for goal to outscore goal-scoring rivals Harry Kane and Mohamed Salah.
"We saw previous year Salah fight for it and they play more or less the same position, as a winger coming inside the pitch", Alonso said.
"I want to speak with him and I want to speak to the doctor and then I will decide". "Yes, I think so".
Chelsea travel to Greece for Thursday's Europa League tie against PAOK, and Sarri will consider rotating his squad. He's playing awesome football and I hope he keeps this. We can cope with the problems with the quality in the offensive phase, but not in the defensive phase.
Sarri was pleased with his side's efforts against the winless Bluebirds but said reiterated that they were still "a step away" from Liverpool and Manchester City.
"My target is to become the best team in England in one year, 18 months".
Chelsea rarely offer contracts of longer than one season to players over the age of 30, but they are understood to be eager to secure the Brazilian's long-term future.More news: Heavy rain expected for Toronto starting Sunday night
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