Fremantle big man Luke Jackson has revealed he’s spent the bulk of the summer training as a midfielder, and he’s hoping to ruffle the feathers of club teammate Caleb Serong in the upcoming State of Origin showdown. The 24-year-old now wants to dominate games as an inside midfielder - a move Fremantle flirted with at times last year but now appears set to go all-in on. Jackson playing as an inside mid would give Fremantle the option of selecting all three big men each week. Star midfielder Serong has played a key role this pre-season helping Jackson learn the craft of being an inside midfielder. “There’s a lot that goes into playing as an inside mid, there’s a lot of learning to do,” Jackson said.