The Super Eagles goalie has boasted that the Enugu side will surely get past the Tunisian team when they meet over two legs
In the draw released on Tuesday, the Flying Antelopes will host their Tunisian opponents in the first leg next weekend and Agbim is confident they will qualify for the group stage of the competition.
"Yes we are going to have a tough game against the Tunisian side, but I am optimistic that we are going to come out tops in the two legs," Agbim said.
"I am sure because the players are ready to make this last match a good one for themselves and also play in the group stage of the Confederation Cup.
"Nobody should write us off. We may have lost to Recreativo Libolo, but they will see an improved Rangers in this game against CS Sfaxien.
"A lot of people have also said we should have played the first leg away. A good win at home settles the game. All we need to do is to win well in the first leg.
"The fact that we did not win our first leg game against Recreativo Libolo affected us in the second leg. But it is going to be a different ball game against Sfaxien.
"We will be ready for them and everything will work well for us. The mistakes noticed in the last game will not be repeated.
"It will be a tough game, but we will come out victorious," Agbim boasted.