Pellegrini optimistic over Silva
The Spain midfielder has missed City's last two games after suffering a thigh injury while on international duty.
Defender Micah Richards could also come back into contention after missing the start of the season with hamstring trouble but the Etihad Stadium clash is likely to be too soon for left-back Gael Clichy.
Pellegrini said: "Richards is working normally with the whole squad, same thing for David Silva and Clichy starts now.
"Maybe he will not be ready for next Sunday but all the other players, except (Martin) Demichelis, are fit, no problems."
City will be led by Vincent Kompany after their inspirational captain made a successful return from injury in the midweek Champions League win at Viktoria Plzen.
Kompany had missed the previous three Barclays Premier League games after suffering a groin injury in the season-opening win over Newcastle.
The Belgian brought strength and shape back to the defence after unconvincing displays in his absence.
Pellegrini said: "I think Vincent is a very important player for us.
"We worked well without Kompany. If you see our numbers in games he didn't play, we had three clean sheets, but he is always important. He gives confidence to the whole team."
Related Manchester City News