The more I think about Carmelo, the more I might target him.
While it would be painful to lose Avery Bradley, I would include him in the package. This would secure Smart's position in statrting lineup and relegate the defensive specialist/ball handler off the bench role to Rozier, a role he would play perfectly.
And IMO, this might be enough to attract NYK.
Avery Bradley/Amir Johnson/Jonas Jerebko/Celtics 2018 1st round pick
for
Carmelo Anthony
NYK clear their books and land Avery to pair up with Porzingis. They make room for 2 max FA to pair up with Bradley/Porzingis/Noah pairing. That is an attractive path forward for them.