Khuboni, 28, yesterday sealed a move to Aces - along with Mzivukile Tom - from Golden Arrows.
"I’m very much happy to have joined a team of Aces’ calibre," Khuboni told AmaZayoni's official website.
"They have a wonderful and legendary coach in Clive Barker and their ambitions as a team appealed to my future plans. It’s a totally new chapter in my life and certainly a challenging one.
"I wish my former team Arrows everything of the best in the NFD. Had it not been for them, I would not have come this far as a player," concluded the ex-Bafana Bafana midfielder.