Chelsea boss Carlo Ancelotti believes Arsenal are afraid of Didier Drogba ahead of Monday's crunch clash at the Emirates.
The Ivorian has a fantastic goalscoring record against the Gunners - 13 strikes in 13 games, including five goals in the last three meetings.
While Drogba has not been at his best this season following a malaria scare, he showed signs of improvement in the 1-1 draw at Tottenham last time and Ancelotti is expecting a good show from his star striker.
He said: "I think they are a little bit afraid of the performance of Drogba, because he's done very well against them.
"If Drogba plays at his best, we'll have more opportunity to win."
Ancelotti is eyeing a positive result against the Gunners after just one win in their last seven league games has seen the Blues slump from top to fourth.
Chelsea could find themselves six points behind leaders Manchester United when they take to the field on Monday and Ancelotti does not want to fall further behind the title pace.
"We don't want that gap to widen, so it's important to obtain an important result in this game," said the Italian.
Chelsea captain John Terry has claimed that the Blues will be unable to rotate over the busy festive period due to the increased number of youngsters in their squad following a summer cull of more experienced names.
But, following the return of players from injury, Ancelotti insists his squad is strong enough to cope with four matches in 10 days over the hectic Christmas period.
He said: "When you are not in a good moment, it's very difficult to put in the young players because you don't want to put responsibility on their shoulders.
"But now it's different. The squad is good, the players are in good condition, players without injury, and the squad is enough in this moment to play this game well - at our best."
However, Ancelotti has hit out at a schedule that sees his side host Bolton just two days after Monday night's match at the Emirates.
"I want to say something about the Bolton game because we won't have the possibility to recover," he said.
"We'll have two days, compared to Bolton who, unfortunately, play on the 26th. We play on the 27th.
"That's not a good thing, to have one day less to recover. I'm not happy about that."