Irishman O'Brien is returning to his country of birth to join an un-named Airtricity Premier Division side.
He initially joined Bradford from Birmingham City on a three-month contract but signed a new 18-month deal in October 2009.
Source: BBC Sport
Irishman O'Brien is returning to his country of birth to join an un-named Airtricity Premier Division side.
He initially joined Bradford from Birmingham City on a three-month contract but signed a new 18-month deal in October 2009.
Source: BBC Sport
