Knut Neida. Dårleg setning. Eg kan ta feil.
Her er det en random Redditor meinar dei meiner iallefall:
It's incredibly badly/ambiguously worded.
My interpretation is that it's meant to mean they value the club at $3bn but will also pay off $750mn of the debt, meaning the total value of the bid is $3.75mn.
So when it says "adding on" it means that amount is being added onto the bid to pay the debt, rather than that they intend to add another 750mn of debt onto the club.