The teams will collide in Tunis, with Pirates needing a scoring draw to progress following the goalless stalemate in the first leg at Orlando Stadium.
"We will have to take the game to them. Esperance will come all out to play and that suits us," Klate told his club's official website.
"At this stage, I think the pressure is more on Esperance. They have to beat us to go to the finals and they are playing at home, so, I expect an open game on Saturday.
The former SuperSport United ace added: "They (Esperance) celebrated the draw here, so that shows us that they think they can beat us in Tunisia.
"I personally hope they approach the game in that mind-set. We have got speed and skills aplenty in the team so, playing end-to-end stuff will be good for us," concluded Klate.