My thoughts-
OZL increase their bid for Carrapateena and win the auction.
OZl now owns Carrapateena and will need extra funds to develop it, thus the recent mention about future debt levels.
OZL now come back onto BHP,s radar with a definate growth strategy in place and a tier 1 profile.
BHP mop up the lot with SFR as an alternative for their copper expansion down the track ( let them deal with Posco.)
Game over - We all win. (maybe) lol.