Arsenal midfielder Denilson says they go into their massive derby with Chelsea full of confidence.

Denilson was on the scoresheet for Arsenal in Tuesday's 2-0 victory over Champions League opponents Standard Liege.

"I am very happy at the moment. Not only me but also all the group is very happy," Denilson said on arsenal.com.

"On Sunday we have a hard game against Chelsea, a big team, so every game we have to focus."

Denilson, who has recovered after a spell on the sidelines with a back problem, added: "Two months out was very difficult but I am back now so I have to play well in all the matches."