Barnet have completed the signing of Republic of Ireland defender Darren Dennehy from Cardiff.
The 21-year-old, who played 19 games on loan at Gillingham last season, turned down a permanent switch to Kent to link up with against with Bees boss Mark Stimson at Underhill.
Stimson said: "I am delighted to capture the signature of Darren on a permanent basis.
"I really enjoyed working with him before and him committing to Barnet shows he must like the way I work."
Meanwhile, out-of-contract striker John O'Flynn has joined Bristol City's tour to Scandinavia as Steve Coppell looks to add to his attacking options.