Riveiro said working with Ncikazi, who with Fadlu Davids led Pirates to the Caf Confederation Cup final last season, has been good.
Despite that decent run on the continental stage, Pirates were poor at home, finishing sixth in the DStv Premiership.
Though the Spaniard brought his own trusted soldiers, he and the other new arrivals will rely heavily on Ncikazi as he understands local football better.
“He is a very humble guy with a lot of experience in the country,” Riveiro said.
“I’m smart enough to understand that he is going to have a huge contribution [to make] for us to accelerate the process to help us understand the culture, players, coaches and everything around the game.”