Knightmare named players on his twister who would gets a look:

With two state leaguers to join Carlton and Gold Coast respectively. I'd regard Mitch Maguire (mid/fwd), Josh Corbett (KPF), Sam Collins (KPD), and Mitch Grigg (mid/fwd) those four best choices to join clubs in 2019, though far from the only worthy choices
It's unclear whether either club can trade them. My view is Maguire/Corbett/Collins are worth second round picks. Grigg a late pick.
Other names mentioned in his posts:
Jye Bolton
Schloithe
Gibbons
Shane McAdam (Sturt) and Chris Burgess (West)