The 23-year-old arrived from Portuguese club Boavista, in the wake of Sidwell’s departure to Chelsea this summer.
Cisse said told eurosport.yahoo.com: “I don’t compare myself to Steve Sidwell. He’s a great player but he has now gone to Chelsea.
“I’m here to work and to progress. There are a lot of players here but I don’t think there is a direct replacement for him.
“I’m not here to replace Sidwell.”