The White Sox got them for 3, 6, and 9 million respectively, then had one guaranteed year of FA at 12 plus two more club option years at 12.5 and 13. Boras is never going for any of that nonsense. Paxton is 28, and Boras is gonna want to get a big FA deal out of him. He might give Seattle ONE free agent season if they jack his arb payment buyouts up, but Boras is gonna want him to hit the market with years left on his arm if possible. JMO, but getting a long term deal for Pax would be tough - and might not even be optimal.
Paxton has never thrown 175 innings in a season, IIRC, and he won't this year either. He was always on the DL with nagging injuries in the minors too. How much are you gonna pay for the massive version of Erik Bedard? Neither Canadian could stay on the mound over extended innings. I'd be pretty cautious about agreeing to Boras's inflated terms despite my love for Big Maple.
Just a thought.