"It's sad news [Riveiro's departure]. He's already one of the best coaches in Pirates history... you can't say he's the greatest because you must not forget people like Ruud Krol and Roy Barreto,'' Palacios told Sowetan Live.
"However, if he can win the Caf [Champions League], he'd be rightfully considered the best Pirates coach of all time. He can still win the league and the Caf, I believe he can do it and claim that status of being the greatest.
"He built a lot of youngsters, making them big and for that I respect him a lot."