"I think the hard part has been done, but also we know we have a lot of respect because Arsenal are a very good team and will be dangerous on the counter-attack," said the boss.
"They showed in the last round, when they drew at home against AC Milan and won 2-0 in the San Siro, that they can win at difficult places. Our fans have a big role to play for us.
"It is natural for them to want us to attack because we are at home, but we will also have to be careful because of the way Arsenal play.
"We need the fans to make it a great atmosphere, but we also need them to be patient.
"I have confidence in our supporters because they understand the game."