Some of you obviously don't understand how the offer sheet works. Here is the key part for you not following along at home:
The AAV for an offer sheet, which determines the compensation required, is derived by dividing the total contract value amount by the lesser of:
number of years offered, or
five (5) years
So if you offer him 8.1 that's going to cost you 4 first round picks. I kinda think Dubas might be okay with that...
https://www.capfriendly.com/offer-sheet-calculator