Its basically nothing. You cant bury contracts anymore by waiving.
What is a Buried Contract?
Teams do not receive full cap relief when a player on a one-way NHL contract is reassigned to the American Hockey League, or is loaned to a team in another professional league.
The players salary cap hit, minus the sum of the minimum NHL salary for the respective season and $375,000, still counts towards the team’s salary cap total.
The cap hit relief is therefore equal to the minimum salary of the respective season + $375,000:
2014-15: $550,000 + $375,000 = $925,000
2015-16: $575,000 + $375,000 = $950,000
2016-17: $575,000 + $375,000 = $950,000
2017-18: $650,000 + $375,000 = $1,025,000
2018-19: $650,000 + $375,000 = $1,025,000
2019-20: $700,000 + $375,000 = $1,075,000
2020-21: $700,000 + $375,000 = $1,075,000
2021-22: $750,000 + $375,000 = $1,125,000
https://www.capfriendly.com/faq#buried