Quoting: CMcAvoy73
If you take a glance at contracts, none of those examples are reasonable. There aren’t any examples from this century of a guy in scheifele’s position getting a top four d man in return. Its not a thing.
Lindholm was already signed to a $4.85M AAV and coming off a season where he had 44 points in 81 GP, or a little more than half of what Scheifele has been doing the last 6 seasons. He cost 6.1% of a team's cap in 2018-19 at that price; it's obviously less than Schefiele costing 7.4% of a team's cap but it's not so far off that it's an insane comparison.
Stepan was coming off a 55 point season, and had 4x$6.5M left on his deal - meaning he actually took up 8.7% of a team's cap. Higher paid, worse production, and paired with Antti Raanta, brought back a guy who turned into a top 4 D within a year and a 1st rounder. Scheifele at a lower cap hit for shorter term and more production has to be worth something comparable to what Stepan pulled in.
Duchene is actually probably the best comp for Scheifele. He was traded with 2x$6M left on his contract (Scheif is at 2x$6.125M in a league with a higher cap now than in 2017-18), and was a guy who had only really sniffed being a PPG player *once* in his career to that point (70 pts in 71 GP in 2013-14). So - basically the same term and AAV as Scheifele, with less production. I'll give you that he probably made some of it up on defense, but it's not like he's Patrice Bergeron 2.0 - he's an okay defender at best.
So what did Duchene get back?
A 1st and 3rd rounder in 2019, a 2nd rounder in 2018, (#4 & #63, then #58 if you were wondering), PLUS the rights to Ottawa's 2017 1st rounder pick in Shane Bowers, a couple of fringe roster players in Andrew Hammond & Vladislav Kamenev, and a recently-debuted top 4 LD prospect named Sam Girard. Girard averaged a shade under 18 minutes per night as a 19-year-old with the Avs before becoming a perennial 20+ minute, top 4 D starting with his age-20 season.
That's literally a precedent for a very similar player with similar term getting back a top 4 D on his ELC, plus a 1st, 2nd, 3rd, and a recent 1st round prospect. I think giving up Carlo & a 1st is a steal compared to that type of haul.