Mamelodi Sundowns head coach, Pitso Mosimane, says his players know the importance of their second leg tie against AC Leopards.
Goals from Leonardo Castro and Khama Billiat handed the Brazilians a 2-0 win at the Lucas Moripe Stadium last weekend.
Sundowns did have a chance to make it 3-0 but Anthony Laffor had a late penalty saved in the first leg encounter.
Mosimane told journalists that they are going into the game for a win, as they want to progress to the next round of the tournament.
"For us this is a must win game. We want to go to the next round after winning both games," Mosimane said.
"Obviously it won't be easy but it's possible and the players know the importance of winning today. We have played against them and we know where they are strong and where we can hurt them now."