Nethunter work fine with the lastest CM13 for OPO.
I use it with TWRP and multirom.
1) In TWRP, Instal CM13 as a secondary rom
2) Configure your CM13 and enable dev mode with "root access" enable too.
3) In TWRP, multirom, install your Nethunter zip file to your CM13 rom..... take a cofee.....
4) in CM13, run your Kali Chroot Manager and chek App Update to get kali 3.0.5.
Done