NYR offer sheet Matthews $15 mil per X 7 years max = $105 mil to steal him away, while Leafs offer him as you suggest $10 mil X 8 years max = $80 mil take it or leave it offer.
+$25 mil can buy a lot of aspirin for the headache to subside for Auston.
Now I don't believe Matthews will force an offersheet on the Leafs because I believe they will negotiate in good faith and not play hard ball, and pay him what he deserves and that is going to be north of $10 mil and likely closer to McDavid contract. He will end up after the ink dries as a top 5 NHL salaried player.
PS. Leafs begrudgingly matching is how the CBA works for players/agents forcing teams to pay market value or lose the player for draft pick compensation if they don't match. Its business !!!!
Like it not other contracts have moved the scale upwards as comparables.