MIL wins this trade get 2 all stars for one but trade rollins value contract.

DALLAS shred salary and get MVP caliber player who is not injury prone. Without this trade Dallas is deep in 2nd apron (hell) next seasons so having rollins great contract helps.

NETS get lottery pick talent in dereck lively II but also get 2 not so desirable players but they have plenty of salary cap so they can absorb their contract and in 2 years the contracts will expire and they will be deeper in rebuild so they attract free agents.