Martin Allen's son scored against his side as Barnet went down 2-1 in their pre-season friendly at Margate on Tuesday night.
Charlie Allen, who his old man admitted he'd love to sign but could not afford , gave Margate the lead after 12 minutes, darting into the box to score past Graham Stack.
Charlie MacDonald levelled in the 62nd minute, his third goal against former employers in pre-season after notching against both Stevenage and Brentford, but just eght minutes later, Anthony Riviere curled home to secure the win for Margate.
Gavin Mahon was the only player named in Barnet’s starting XI not contracted to the Bees, although the midfield general remains in talks with Allen senior about a deal for the forthcoming season.
Summer signing John Akinde, who partnered MacDonald up front, skippered the side as the rotation of the captaincy continued.