Everton manager David Moyes believes that supporters will turn their back on football if results start to be influenced by diving.
Last year's Merseyside derby saw Jack Rodwell harshly sent off after a foul on Luis Suarez and Moyes has admitted that he is scared that history may repeat itself on Sunday afternoon.
Moyes said: "I've got concerns about Suarez because he's got history and these people are very good at it.
"Last year was a dive, and the referee made a really poor decision that ruined the game after 15 minutes.
"It will turn the public and fans off football if they think people are conning their way to results. When you're out to manufacture results, supporters don't like it."
Moyes has led Everton to fourth place in the Premier League this season.