Zwane's contract with the club will expire at the end of the season, along with the likes of Tebogo Langerman, Tiyani Mabunda, Leonardo Castro and Khama Billiat.
And while coach Pitso Mosimane is confident he will retain a number of his key performers, Zwane is non-committal on his plans.
“No comment on that... I’m still happy at Sundowns,” Zwane said.
“What I’m doing currently, I’m just focusing on my game. I'm trying to do more for the team to score more goals, maintain my performance.
“Bear in mind I’m a professional and I don’t want contract talks to affect my performance because I don’t do the talking... that is between my agent [Jazzman Mahlakgane] and the team. I’m only focusing on my football.
“And If you are looking for a comment, I have no comment.”
Meanwhile, the attacker says the log leaders are taking it one game at a time.
“We are looking forward to take this league but we take it one game at a time,” he said.
“We are doing well as a team. I can say so far so good and we need to do more.”
The Brazilians' 1-0 win over mid-table Maritzburg United last night opened up a five-point lead at the summit for Mosimane's side, who will end 2017 with visits from Bloemfontein Celtic and Cape Town City.