Why does Saul say, “I want something new built on something old” (210) in Indian Horse? What does it symbolize in terms of family? How does it show the amount of trust Saul has in the Kellys

Why does Saul say, “I want something new built on something old” (210) in Indian Horse? What does it symbolize in terms of family? How does it show the amount of trust Saul has in the Kellys.
Reference: Wagamese, Richard. (2012). Indian Horse : a novel. Vancouver, BC :Douglas & McIntyre,