Macdonald will face his second parole hearing, at Christchurch Men's Prison tomorrow.
In denying him parole a year ago, the board said Macdonald had "much to do"and would be required to undertake one-on-one counselling with a psychologist. A psychological report described him as having "narcissistic traits", while a personality test revealed a "marked tendency to portray himself as having socially desirable qualities"and "can be self-involved and over-value his self worth".
He was not legally represented during his first hearing but APNZ understands a lawyer will act for him tomorrow.
Scott Guy's father, Bryan Guy, told the Herald last week that knowing Macdonald would eventually be released meant he and wife Jo were realistic about how they would be when the moment finally arrived.
"You've still got to be courteous and polite and so on."
Macdonald is the estranged husband of Bryan Guy's daughter Anna, who is now living in Auckland with her new partner, Brent Jameson. The couple are expecting their first child together. Ms Guy has four children with Macdonald.
Bryan Guy said the children often spoke about their father, and would have a relationship with him, although it would not change things dramatically for the rest of the family.
"He's still the father of our grandchildren. I dare say there will be some contact - we won't be looking for too much."
APNZ has been granted access to today's hearing and will file updates as they occur.