The 24-year-old, who joined Usuthu from second-tier side Thanda Royal Zulu, made 10 starts and one substitute outing in 2013/14.
Hlanti is vying with the experienced Marc van Heerden for coach Craig Rosslee's favour, and he says the competition is of a healthy nature.
“I’m happy with how the season went. The coach did give me some chances but as a player you always have to push yourself for more,” Hlanti told his side's website.
“I know that I did improve throughout the season but I want to start more games next season and contribute more for the team.”
Hlanti added: “Marc is a great player and I’ve learnt a lot from him. I think he has also learnt from me because we have different strengths and weaknesses.
“We push each other every week and we’ll continue doing the same to help the team progress.
“I also have to commend the coach for the way he talks to us as players and how he always highlights both the right things and the wrong things that we do.
“He gives us freedom to attack and defend and I hope we’ll be more consistent as a team in the new season.”