Can anyone get into this paywall? The first part that I could read said he was dealing with an elbow injury, not the split.
https://www.nzherald.co.nz/sport/why-joseph-parker-turned-down-ibf-world-title-eliminator-fight/FCNMWEI6ADR6Y4FMUF5GF5FJSI/
https://www.nzherald.co.nz/sport/why-joseph-parker-turned-down-ibf-world-title-eliminator-fight/FCNMWEI6ADR6Y4FMUF5GF5FJSI/