Wenger and Ferguson were rivals on the touchline for 17 years and the Frenchman intends to seek out his old sparring partner at Sunday's game.
"It will be a new [experience], because for the past 17 years it was the case [that we were opponents]. It will be a bit strange," said Wenger.
"I will see him, certainly yes. It's always easier [when you are not direct opponents], it's a bit more peaceful because we don't fight against each other.
"Now we meet each other only at the big managers' meeting to speak about how we can improve football and not how can Manchester United beat Arsenal or how Arsenal can beat Man United. So of course it will be a bit more peaceful and more serene."
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