Failed medical costs Sharks flyhalf dearly
Radebe was bound for Johannesburg, after negotiating a release from the Sharks.
However, he has failed his medical with the Lions and the deal fell flat.
Radebe is struggling with a knee injury.
The 23-year-old, who was schooled at St Stithians College in Johannesburg and played for the Golden Lions at national youth competitions since primary school level until 2013, has made 20-odd first-class appearances for the Sharks since his debut in 2015.
The Sharks, who also lost Springbok Patrick Lambie to Racing 92 in France, have signed Robert du Preez – the son of coach Robert du Preez senior – from the Stormers.
They have Curwin Bosch, Benhard Janse van Rensburg and Du Preez listed as their flyhalves for in their provisional 2018 Super Rugby squad.
The Durban-based franchise announced a host of signings in December.
By Jan de Koning