Take the Gallen fight for the dosh, and then fight Dave Allen in the UK or McKean in OZ.
https://www.stuff.co.nz/sport/opinion/300550069/sonny-bill-williams-should-come-clean-on-his-heavyweight-ambitions--or-expect-scrutiny
https://www.stuff.co.nz/sport/opinion/300550069/sonny-bill-williams-should-come-clean-on-his-heavyweight-ambitions--or-expect-scrutiny