Arsenal players should not respond to any antics from Chelsea striker Diego Costa, manager Arsene Wenger has said.
The Gunners host the Blues in what is expected to be an entertaining London derby later on today.
And the Frenchman is eager to avoid a repeat of last season's incident when defender Gabriel Paulista was sent off after clashing with the Spain international.
"[The best way to handle Diego Costa is] by being completely cold-blooded, just focus on the game and don't respond," Wenger said.
"Just try to negate his qualities and his game. You need to be committed but by respecting the rules of the game and not responding.
"Last year we were a bit unlucky at Chelsea to be down to 10 men because we got a red card and it was [rescinded] after. In the other game, we deserved the red card because we were caught on a quality run by [Costa].
"He [Antonio Conte] is doing well because he has started, they have started, in a very strong way.
"After that they have a little bit slowed down against Swansea and of course they had the big game against Liverpool that they lost, but I think Liverpool had a strong start, a strong first half and they came back in the second half, so he [Conte] has done well."
