Gianfranco Zola is set to replace the suspended Jimmy Floyd Hasselbaink in Sofia tonight as Chelsea take a 3-0 UEFA Cup first round first leg lead to the Bulgarian capital.

Chelsea manager Claudio Ranieri has promised to go all out for victory tonight rather than sit on his side's healthy first leg cushion.

Frenchman Emmanuel Petit is also set to return following a chest infection.

Graeme Le Saux was left behind in London as his wife was due to give birth to their second child today.

Ranieri said: "My philosophy is always to try to win. My players are in good condition, which is important, and our mentality is always to win."

Chelsea's opponents are believed to have already thrown in the towel. They are expected to rest top scorer Georgi Ivanov and instead save him for Sunday's massive derby clash with rivals CSKA Sofia.