It looks to me like Boston is in a bit of a pickle financially with Al Horford. His cost is pretty high, maybe they would be interested in a trade that helps them from digging themselves in too deep.

Does anyone see a world where Boston tries to make a move like this?

What could we offer them that lightens their load, makes sense for them, and brings in a proven playoff contender to us?

https://hoopshype.com/lists/boston-celtics-offseason-preview/