The 27-year-old lock stands at 2m tall and tips the scales at 108kg.
The Pretoria-born second-rower was schooled at Afrikaanse Hoër Seunskool (Affies) and also attended the University of KwaZulu-Natal.
He has previously played for the Sharks and the Bulls, while he also enjoyed a stint in the Japanese Top League with the Kubota Spears.
Droste says that he is thankful for the opportunity given to him at the Toyota Cheetahs and he looks forward to the new journey.
“I'm really looking forward to the stay in Bloemfontein and excited to get going with the team. With everything that is going on contracts is a bit difficult to come by. You need that opportunity to come your way.
“I'm thankful to the Cheetahs for giving me this opportunity to go out there play again and prove myself.
“For me, it is a good move to come to the Cheetahs and hopefully I will be able to get a lot of game time. I'm looking forward to the challenge, meeting everyone here, and the season that lies ahead. Whatever lies ahead we are not sure about yet, but looking forward to the unknown as well.”