In addition read page 6 (= PDF page 7) last paragraph, beginning with "The volume of assets"! It describes bids for "Whole Bank" transactions, and it clearly explains that the acquirer’s bid reflects their (the acquirer's) valuation of the deposit franchise LESS their estimate of the expected loss on the book value of the assets
IMO the (premium) bid IS only an adjustment/offset for book value, or does anybody come to another conclusion an I'm completely wrong?