Again though what is cap space worth?
The issue we are going to see is in years 3 + 4.
2019-2020
Giradi = $3.611m
Beleskey (buried) = $.825m
Staal = $2.9m
Smith = $.970833m
OR Shattenkirk @ $1.483m
Spooner = $.3m
Total Dead Cap Space = ~$8.6m
2020-2021
Girardi = $1.11m
Staal = $3.7m
Smith = $3.145m
OR Shattenkirk @ $6.083m
Spooner = $.3m
Total Dead Cap Space= ~$8.255m
Key players to sign = Lemieux (maybe), ADA (maybe), Georgiev, Strome
Players off the cap = Kreider, Namestnikov, Fast
2021-2022
Girardi = $1.11m
Staal = $1.2m
Smith = $1.1456m
OR Shattenkirk @ $1.433m
Total Dead Cap Space = $3.456m
Key Players to re-sign = Hajek, Chytil, Andersson, Howden, Buchnevich
Players off the cap = Shattenkirk, Hank
2022-2023
Girardi = $1.11m
Staal = $1.2m
Smith = $1.1456m
OR Shattenkirk @ $1.433m
Total Dead Cap Space = $3.456m
Key players to re-sign = Kravtsov, Kakko, Zibanejad, Fox, Lemieux (maybe), ADA (maybe)
So you're saving:
2019-2020:
$2.388M
2020-2021
$.76m
2021-2022
$.912m
2022-2023
$.912m
And you are getting rid of a better player who will most likely have value as soon as next off-season.
So let's say the Rangers pay his bonus next July 1st and then can trade him for a 2nd + 3rd '2021. The additional dead cap of $.912m in 2021-2022 and 2022-2023 is worth less than the additional 2nd + 3rd they recoup from Shattenkirk. Those picks are worth more than that dead cap space. Therefore, buying our Shattenkirk in lieu of Staal and Smith is a poor decision.
You're also clearing an extra contract (Smith + Staal vs Shattenkirk) and opening up LD where the organizational depth is much more plentiful than RD (outside of Fox there isn't anyone else close to ready right now)