The manager told the club's website: "It's an opportunity to go forward and as well an opportunity to make a distance with Everton. As I told you after the last game against Man City, we look in front of us and behind us as well. That's what the game is about on Sunday.
"Everton are a good side, that's why they are where they are. I think in the first game [in December] we were caught just at the end. In the second game [in the FA Cup] we won 4-1 and scored two late goals, so they were two interesting games. I think it will again be very interesting on Sunday.
"For us it's very difficult to imagine the impact it will have on finishing fourth, but it's a game we want to win. Everton have won against Swansea in the last minute and they have a never-give-up attitude, which gives them credit."
Everton have won their last five matches in the Premier League, while the Gunners are without a win in their last three.