Mnisi represented the Pumas at the 2006 and 2007 Under–18 Craven Week tournaments, which earned him a place in the Sharks academy. He played for their Under–19 team in 2008 and their Under–21 team in 2010.
He moved to Johannesburg to join the Golden Lions prior to the 2014 Currie Cup Premier Division season. He has been labelled "the offload king of domestic rugby" and, as a result; "South Africa’s answer to Sonny Bill Williams."
In 2019, Mnisi joined the Kings, participating in the Pro14 competition.
In 2020 it was revealed that Mnisi had signed a deal to return to fellow South African Pro14 contestants, the Cheetahs, having represented the side in 2013/14.
Career
 |
Tel Aviv Heat Inside Centre |
2023 - present |
 |
Griquas Inside Centre |
2013 - 2016 |
 |
South Africa A Inside Centre |
2016 - 2017 |
 |
Golden Lions Outside Centre |
2014 - 2019 |
 |
Lions Inside Centre |
2015 - 2019 |
 |
Southern Kings Inside Centre |
2019 - 2020 |
 |
Free State Cheetahs Inside Centre |
2020 - 2023 |
 |
Cheetahs Outside Centre |
