Fabregas’ contract with Chelsea runs out at the end of the season, while Luiz’s deal will end in 2019.
In a interview with journalist on Tuesday , Sarri said “I spoke with the club about this one month ago. I know very well it is not easy, but I think we can do a new deal for both [Fabregas and Luiz],”
“They are very important players for us. It is very difficult to find a centre-back for this level and it is difficult to find a centre-midfielder technical like Fabregas, so I think they have to stay with us.
“The deal is very difficult for this reason (their ages), the club want a short contract and the players want a long contract, it is difficult for this reason but we can find a solution.”
Sarri added: “I think David and Cesc are leaders. “I think it is important for me and the staff if they stay with us. I know the difficulties of the new deal.
“The problem is only, one or two years for a new contract, but I think the club can find a right solution.”