In all honesty, they should be working with Brisbane towards a deal from day 1 - as a backup in the event that the Sydney trade goes south. Sydney are in for a rude shock if they made the offer to Tippett based on false info from Blucher, regarding the compensation that Adelaide would be expecting in return.
With GC having traded away pick #2, Brisbane are now the #1 contenders for a trade - as far as Adelaide would be concerned. At least, I hope that's their line of thinking.