O'Cearuill, who has two full caps and nine under 21 caps for Ireland, joined Barnet in 2007 from Arsenal and also had a loan spell at Brighton prior to arriving at Underhill. Joe made 11 first team starts, plus another 7 appearances as a substitute for the Bees and scored the winning penalty in the 3rd Round FA Cup victory over Swindon Town in 2008.
O'Cearuill played for the Harlow Town in the friendly with a Barnet XI in September, which the Bees won 2-0 with goals from Nicky Deverdics and Elliott Charles
Meanwhile, Charles, who was sent off while playing for Ebbsfleet on loan last weekend, has returned to Underhill after having his loan cut short.