Both teams must agree and trade wont happen if it doesn't
https://fanspo.com/nba/s/general/p/PDERJk2rRUyw0T/roster-post-for-regular-mock
https://fanspo.com/nba/s/general/p/mtEIrcdwOwEhah/trade-negotiations-post
https://fanspo.com/nba/s/general/p/Z_5T10fplbGk_G/regular-mock