"I already know which games I will play and I am ready for it", Fabregas added.
They beat Southampton 3-2 at Craven Cottage and now Ranieri feels they have put in the preparation work for their London derby at Stamford Bridge. His goal was enough to secure Sarri's team a place in the knockout stage of the competition.
QUIZ: Can you name the most expensive transfer fees ever paid for a player by Chelsea?
I think we approached the match very well, so I am very happy with this, Sarri said.
'He has to shoot more; he has the quality to shoot, he must improve, ' said Ranieri, ahead of Fulham's Premier League trip to Chelsea on Sunday.
However, new boss Claudio Ranieri will return to his former club after replacing Slavisa Jokanovic last month and the Italian got off to the flawless start after beating Southampton 3-2 last weekend.
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Everton will remain sixth with victory but have not taken three points from Anfield since Kevin Campbell scored in a 1-0 win in September 1999.
'He is a good player with a high quality, but I want more from him, ' said Ranieri.
Sarri made 10 changes to his side on Thursday night so the likes of Cesar Azpilicueta, Antonio Rudiger, David Luiz, Marcos Alonso, Jorginho, N'Golo Kante, Alvaro Morata and Willian are set to be recalled.
"I would rather be on the other side of the team [playing in the Premier League], but I play at Stamford Bridge". He has been straightforward with me and I need to be ready for when the opportunity comes.
"He's a very good coach and deserves to be where he is".
"And also Hazard scored a great goal for Leicester (earning Chelsea a draw against Tottenham in 2016, handing Leicester the title)". I ask him during training, "shoot at goal, shoot at goal", but he passes and he passes.
'Until he understands, it's important he keeps scoring goals.