Aiden Markram, Lungi Ngidi and Keshav Maharaj will be the big-name Proteas in the SA20 auction after all six teams announced their pre-signed and retained players ahead of season 4.
MI Cape Town will kick off their SA20 title defence with a home game against Durban's Super Giants at Newlands on 26 December after the league announced the fixtures for the fourth season.
At least 72 player slots will be up for grabs and an increased salary cap for the six franchises in the SA20 auction that will take place on 9 September in Johannesburg.
Marco Jansen will not have any more space on his mantelpiece at home soon.
MI Cape Town captain Rashid Khan credits team effort for their maiden SA20 championship title.
Kagiso Rabada produced a match-winning performance to guide MI Cape Town to their first-ever Betway SA20 title in front of a packed Wanderers crowd on Saturday evening.