The Belgian scored in victory at Norwich City a fortnight ago.
"It's difficult for me. I need to change something on the pitch, and understand the situation each game. Against three defenders it is different than against one, and obviously more difficult. I need to play more simply, but also more quickly," he told chelseafc.com.
"It's so great to play with Juan (Mata), with Oscar and with Andre (Schurrle). We have to work together to make playing together easier. When we do that we always make chances and score goals, and we hope to do that again today."
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