Official Team News:
Chelsea:
Its a change of formation again from Avram Grant, with Paulo Ferriera, Joe Cole, Ashley Cole, Claude Makelele and Michael Ballack all restored to the starting line up. Didier Drogba starts from the bench, with Anelka upfront supported by wingers Joe Cole and Salomon Kalou. Shaun Wright-Phillips and Juliano Belletti are not in the 16.
1. Petr Cech
20. Paulo Ferriera
6. Ricardo Carvalho
26. John Terry ©
3. Ashley Cole
4. Claude Makelele
8. Frank Lampard
13. Michael Ballack
21. Salomon Kalou
10. Joe Cole
39. Nicolas Anelka
Subs: 23. Carlo Cudicini, 33. Alex Rodrigo da Costa, 11. Didier Drogba, 5. Michael Essien, 15. Florent Malouda.
West Ham United:
West Ham are expected to line up in a 4-4-1-1 formation, with ex-Chelsea youngster Carlton Cole leading the line for the Hammers. Scott Parker is unavailable to play against his former club.
1. Robert Green; 2. Lucas Neill ©, 6. Matthew Upson, 5. Anton Ferdinand, 3. George McCartney; 20. Julien Faubert, 16. Mark Noble, 17. Hayden Mullins, 7. Fredrik Ljungberg; 34. Luis Boa-Morte; 12. Carlton Cole.
Subs: 21. Richard Wright, 9. Dean Ashton, 15. Nolberto Solano, 18. Jonathon Spector, 25. Bobby Zamora