From Cap friendly:
"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."
For buyout, how cap hit will be
2024-2025 = $1 550 000
2025-2026 = $2 150 000
2026-2027 = $1 550 000
2027-2028 = $1 550 000