Estevao came off the bench for last week's 0-0 draw with Crystal Palace.
"He is doing well since he arrived with us, even in the training sessions," said Maresca. ‘"But for me, he needs a path. He is very young, so we have to be careful.
"He can be an option for tomorrow from the start, for sure after his Palace performance, but we will also look at today’s training session, and then we will decide."
On fellow Brazilian Andrey Santos, the manager said of the Blues midfielder: "I’m very happy with Andrey and very happy with Andrey staying here with us. He can play in Enzo’s (Fernandez) position for sure, he can play in Moi’s (Caicedo) position for sure.
"He played one game from the start in the Club World Cup against Palmeiras, when he was very good as a No.6. So the good thing is that he can play in both positions very good."