The Frenchman has a woeful Premier League record against Jose Mourinho, failing to win a single game in 10 attempts.
However, the Gunners believe they have a secret weapon this season in former Blues star Cech who could help turn the tide.
On the day you have to perform at your best and perform together
Arsene Wenger
When asked whether the goalkeeper gave him any ‘insight’ on his former club, he replied: “A little bit of extra [insight], yes. There is no big secret.
"It is always difficult to go back to your club and play but I believe that he has fortunately handled that this season that is why I decided to play him as well in the Charity Shield - It is the first step that is important and he has dealt very well with it.
“But on the day you have to perform at your best and perform together. Our individual performances will be more important than what he knows.
“There is no massive secret in that.”
Arsenal take on Chelsea at Stamford Bridge on Saturday (12.45pm).
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