Yes, there is bad blood between Jackson and Webster so I can't see him going to NZ until Webster is out of there.
There are ties and interest and need in Brisbane, but as someone already said, unless they have spare cash to work with, they'd need to go to LK and he might discourage them thinking it a risky move.
If he's paid out by Melbourne, a lone suitor could realistically get him for peanuts. In that case, Perth could play him off the bench should Martin return. Incidentally, Martin's 3P% is not far off or better than those of: Goulding, Clarke, Norton, Randle, Webster, Drmic, Andersen, Loughton, Bruce, Prather, Hire, Harris, Wagstaff, Gliddon, Ellis, Newley, Coenraad, Worthington...