The Belgium World Cup star has come on as a second-half substitute in both matches so far, but boss Maurizio Sarri says he is now ready to play around 60 minutes.
Midfielder Cesc Fabregas looks set to miss out again with a knee problem.
Provisional squad: Kepa, Caballero, Rudiger, Alonso, Jorginho, Drinkwater, Kante, Barkley, Hazard, Pedro, Moses, Kovacic, Giroud, Zappacosta, Willian, Cahill, Christensen, Azpilicueta, Morata, Luiz, Emerson Palmieri, Ampadu, Loftus-Cheek, Hudson-Odoi.