Before he signed for AmaZulu from Marumo Gallants in July 2023, Ngema was among the players who had been heavily linked with Kaizer Chiefs.
In the previous season before he joined Usuthu, he played a crucial role for Gallants, who reached the semi-final of the Caf Confederation Cup. They fell to Tanzania's heavyweights, Young Africans, then under current Chiefs coach Nasreddine Nabi.
In the last six PSL games, Ngema was not part of the team, having last appeared on the team sheet when they played Cape Town City. He was an unused substitute, though.