Is Sidebottom overpriced? I feel he has more upside than Dunkley...
Honestly reckon he's more likely to return to that 95-105 range of the previous 5 seasons. Still a premium but also overpriced.
That said his lower K:H, much lower mark to possession rates and high tackle rates all indicate he played a bit more contested role last year and he's always actually been pretty good in that kind of role. Throw in Treloar leaving and he's the most obvious to take up a more central role, as good as he is on a wing I've always liked him more in clearances, he's got a really strong ability to create time and space in there. This would be the case for him being fairly priced and capable of 115 type scoring.
Personally think that Dunkley has purer upside, he's proven he can sustain 120+ in the right role. Don't expect him to be in that role or score like that personally but he can and will if the role is right. Think both should be premium forwards though and would be surprised if they're not.