Born in Perth, Australia, Garcia was a trainee at West Ham where he made 16 league appearances, and after a loan spell with Leyton Orient joined Colchester three years ago. He scored 16 goals in 82 league appearances for them, including 7 in 2006/07.
Meanwhile, Swansea have successfully negotiated a fee for Tigers striker Darryl Duffy, who will now decide whether to return to the club he played for on loan last season.