As per shariah, the acceptance of blood money is from the relatives of the deceased as quoted by Mufti Shahid. In this case, i assume the acceptance of relatives are already there before the decision.
@ Khan, kindly avoid quoting shairah if you cant explain it properly. It is a sin misguiding people over the name of Islam. I advise you to stick to copy pasting google search results instead of using your head coz u will only end up making some stupid underwear theory.