For Brent Seabrook’s contract
https://twitter.com/user/status/1420205512919027717
https://twitter.com/user/status/1420207183501930499
https://twitter.com/user/status/1420208615227490305
So yeah, by adding Seabrook they add the 1.875M extra that Seabrook carries into LTIR, giving them a total cap savings of 6.875 and it only cost them a 2nd round pick.
For comparison: Carolina got a 1st for taking on Marleau’s $6.25M that they then bought out.