Hi Andrew,
There may be another bidder who steps up or IGO could easily increase the offer by including a scrip component rather than all cash given how far their shares have rallied. In any case, the Nickel market has moved significantly since the price was agreed and if I held WSA I’d be fairly content that the deal will need (and likely get) a higher price to complete.
PS: This question comes from the king of the Apex outback postie ride – Flatty, who I met a few years ago. He does fantastic work for the Apex Foundation’s ride and is a champion bloke, indicative of the type of people involved in this wonderful Australian charity!