The Buccaneers made the announcement on Thursday during a press conference, where Pirates also unveiled Milutin Sredojevic as their new head coach, replacing Kjell Jonevret after the Swede’s resignation this week.
Manyisa, who was expected to be stripped of the Bucs captaincy following the club’s disastrous 2016/17 PSL season, will now swap Soweto for Chloorkop after agreeing terms with the Brazilians.
Pirates boss Dr Irvin Khoza confirmed the news, saying: "Oupa Manyisa will be joining Sundowns. He has an unbelievable record with Pirates.”
When asked whether it's a straight sale or a swap deal, Khoza said: "We are not in the business of selling. We are still busy finalising the details of the swap deal."
It is believed that Sundowns could hand over versatile midfielder Asavela Mbekile and Siyanda Zwane in exchange for Manyisa.