According to Jennings, the bond between Boucher and Markram is already strong after working together at the Titans, while he will have to form a new relationship with any other player selected as leader.
Currently believed to be in the running for the role is Markram, Temba Bavuma and Keshav Maharaj, who put his own name in the hat last week.
Jennings says there can only be one and tells News24: “It is almost as if Mark Boucher should find himself a wife again when the new captain gets decided upon.
“He already worked with Aiden at the Titans and that will count a lot.
“The captain should be a good person and that’s why Aiden is in the front of the queue for me.”