I found three different source that said Bell wanted two first or Hill would not be traded.
AFL trade period 2019: Bradley Hill St Kilda, Fremantle, AFL draft, Liam Henry, pick swaps | FOX SPORTS
St Kilda and GWS have completed a pick swap that may have a significant impact on Fremantle’s bargaining power for Brad Hill.coupler.foxsports.com.au
I can find about 47 articles that are saying Brad Hills new contract is worth 900k per year but if you say that to a Saints supporter apparently it's not true.