Sarri hopes to have Higuain available again after illness. The Argentinean didn't travel for the Europa League win at Dynamo Kiev.
"Higuain had a strong stomach ache with fever. It's not a serious problem. I think he will be able to play, but I don't know in what condition.
"We have to play a very important match, and a very difficult match. In my opinion after the big six Everton are the best team in the league in technical quality."