Australian-born defender Daniel Leach has signed a 12-month contract with Barnet and there is also the option for a further one-year extension.
The 23-year-old impressed boss Ian Hendon during the pre-season friendly against Arsenal.
Hendon said: "He's going to be an asset.
"I've been looking for another central defender. Hopefully Daniel will put pressure on Gary Breen and Ismail Yakubu."