He's never going to fare better in a Championship side, he's nowhere near good enough and the game at Championship level is more physical not less, it's physically in the sense of the pace that it is played at.
I doubt many clubs outside of the top flight genuinely have the sort of bargaining power you describe, it is nonsense. The player would be unsettled straight away.
In any event that's why you need targets, not a single target.
I think it seems pretty clear that our model isn't well developed if it even exists, you'd expect a pipeline of targets to replace players so we can sell at the opportune time. It doesn't sound like we have that at all.
Apart from CCFC under SISU who have somehow managed to still be in a weakened bargaining position forced into selling players in January (Leon Best, Jutkiewicz, Madison, McCallum)