Chelsea have won their last three Premier League games on the spin but boss Antonio Conte is expected to ring the changes for the trip to east London.
“West Ham are a good team too”
Chelsea forward Pedro
Pedro is expecting a difficult game against the Hammers and views it as an opportunity to continue their good form.
“It’s an important game,” Pedro told Chelsea’s official website.
“We want to continue to play with this confidence and this mentality.
“It’s a new competition, it’s the cup, and it will be a difficult game.
“West Ham are a good team too.
“It’s always good to see a new stadium and experience it but then you just want to prepare for the game and then win it.”