The 26-year-old had spent time being assessed by the Motsepe Foundation Championship side in July, but he wasn't offered a deal.
Recent reporting suggested that Radebe, who most recently played for Lerumo Lions, had signed a contract for the new season, but coach Stanford Nkoane says the player is no longer with the club.
"No, we haven't signed him," Nkoane said on Soccer Laduma.
"He's no longer training with us. It's not true we signed him. There are many lies that I see on social media, but I just keep quiet because people are doing their business."
"I'm crowded in the central (midfield) area. That's the reason," explained Nkoane.
Leicesterford kick off their new campaign at home against Orbit College on Saturday, 22 August.
