I guess I must have missed this but do we know what family he has left in Greece? Are they wealthy? His mom was living in the US, his father is dead, that's what I know.
To me he doesn't seem like a guy who would share money or give someone access to his money unless he absolutely had too... I also doubt he has money left.
So maybe his family can't help him, maybe they don't know he has been arrested, maybe they just don't care. He could be the black psycho sheep of the family and they're happy to get rid of him?