I think Sydney and Carlton fans believe pick 8 is a fair deal for Papley. I really don't want to lose him as he was one of our best players in 2019 (easily top 5) but if he really wants to go I don't want the club to force him to stay, and pick 8 seems fair given his output and given his age.
It actually should be quite an easy trade, based around pick 8.
Main complication would likely be what Sydney need to give up for Daniher, and thus tying what we give for Papley to it.