The Brazilians have already exceeded their foreign quota for the season, and chances are that the two players may not be registered with the PSL should the club decide to offer them deals.
The news comes soon after it was revealed that Sundowns were close to signing goalkeeper Emmanuel Daniel.
The two Nigerian youngsters are highly rated in Nigeria.
Yahaya is described as a talented left-footed full back, while Meze is a versatile defensive midfielder.
Goal called Sundowns media officer Thulani Thuswa, who refused to comment on the reports as the team is currently in camp.
The reigning Caf Champions League champs are set for another arduous year which will be a true test of their depth.