Bafana drew 1-1 with Ghana on Thursday evening, leaving the South Africa second in Group C and only needing a point to secure their ticket to next year's tournament.
Sudan, meanwhile, will know that only three points will do against Bafana but Ntseki says they are prepared for the opponents to come at them.
"In football, there's something very interesting, if you look we had more possession, very good opportunities but unfortunately we ended up with a draw and I think going to Sudan it's for them to lose," the Bafana coach told SABC TV.
"Because they will be coming at us and we already have a plan for that, they have to play to win, a draw is not going to help them.
"So in this case they will have to come at us and coming to us we have very good players who can play on a transition and get us a win."
Ntseki also bemoaned Andile Jali's injury in the first half which could rule him out of Sunday's match.
"We selected 26 players, we selected those players based on eventualities like that where somebody gets injured or something happens to our players, it is so unfortunate for Andile Jali," he went on.
"I remember when we selected the team for Sao Tome [and Principe] he got injured in the last minute of the game and he could not make it to the camp, we've been talking to him and he was looking forward to being part of this camp.
"For him to get injured in the first-half I think it's bit of a disappointment from his side, I can see even now he's almost in tears but I think with Percy Tau the medical team will work on him, the rest of the guys will have to carry the flag in Sudan."