Chelsea manager Frank Lampard has warned his team must not get complacent against Rennes on Wednesday.
The Blues have four points from our opening two Champions League fixtures ahead of the clash at Stamford Bridge.
"We are happy with where we are in the group after two games, but we can't get complacent," Lampard told reporters. "We must stay on top of ourselves.
"The clean sheets have been great and we are adding goals and a threat in offensive positions. We always want to improve. We have seen some progression but it is a work in progress. We can't come off."
