Since Sixers absorb 3 contracts worth $6.5, $6.4 and $2.9 million, salary dump can be restructured as 3 way S&Ts:
Trade 1
Kings: Landry+Stauskas+Mccallum + Stockton for Player 1 (up to $16,161,000)
Sixers: 2nd rounder #1 out for Landry + Stauskas
Team1: Player1 for 2nd rounder #1 + Mccallum + Stockton
Trade2
Kings: JT for Player 2 (up to $9,750,000)
Sixers: 2nd rounder #2 for JT
Team2: Player2 for 2nd rounder #2
Assuming cap goes up to $68.3 million Kings will also have $12 million in cap space before that.
So this hopefully would be Kings off-season:
1. use $12 million on 1 or 2 players.
2. sign Player 1 via S&T for up to $16,161,000
3. sign Player 1 via S&T for up to $9,750,000
4. use Room Exception on Casspi.
Players in steps 1-3 can be signed for any number of years and with whatever contract structure needed.