"We enjoy training, everyone is buying into his ideas", Iwobi told BT Sport about his new coach after the game.
Hazard has two years to run on the five-year contract he signed in February 2015 and has been pondering an extension.
Sarri explained: "I think we have to work to improve in the defensive phase - and we are not only talking about defenders".
The former Real Madrid man endured a tough summer, culminating in his acrimonious retirement from global duty with Germany following a disappointing World Cup.
After making a gradual return from World Cup duty he played half an hour in the victory over his side's London rivals. I will not leave [this year].
Priyanka Chopra to become 'Mrs. Nick Jonas'
First I'm blessed with an incredible future brother-in-law, and now such an handsome , inside and out, future sister-in-law". Anusha Dandekar, who is a close friend to Priyanka, said the couple makes "love look so easy, lovely and special".
He went on to win a first FA Cup, adding to two Premier League titles, one League Cup and one Europa League title.
Eden Hazard reassured Chelsea fans he won't leave the club this month, despite continued interest from European champions Real Madrid.
The closure of the English transfer window on 9 August means Chelsea now can not sign any players until January.
The Belgian star has been linked with a move to Real Madrid all summer, but Hazard took to the Blues Twitter account to show that his current allegiances are very much with Maurizio Sarri's men by saying, "Hi guys, it's Eden Hazard at Stamford Bridge, we are here just after the derby, you know, London is blue, so see you next week at Newcastle". "But I'm happy here". I'm happy here. I don't want to talk about it yet. "A lot has been said. Clubs can not sign players", said Hazard.
It would be a bit unusual for [Chelsea] to let me go and not recruit another player. "We'll see what happens in a year or two years".