I don't see that as a long term problem really. He showed he had the dedication when he shed about 6kg this year so he could move into the midfield, I'm sure he can continue to improve his fitness.By the way - that 'lack fitness' think is what worries me about Sos' hardon for Petracca.
I've got a nagging worry we trade for him, and he'll play three good half quarters a match.