The player they're getting is Kieth Bogans. This according to Marc Stein and Jason Lloyd
ESPN sources say that the Cavs are in process of trading for Boston's Keith Bogans— Marc Stein (@ESPNSteinLine) September 25, 2014
Sources say Cavs are expected to package their three non-guaranteed deals (Erik Murphy, John Lucas and Malcolm Thomas) in trade for KBogans— Marc Stein (@ESPNSteinLine) September 25, 2014
KIETH BOGANS IS A CAVALIER.
Here is the final tally:
#Cavs send Erik Murphy, Malcolm Thomas, John Lucas III, Dwight Powell and 2nd round picks in '16 and '17 to Celtics in exchange for Bogans— Jason Lloyd (@JasonLloydABJ) September 26, 2014
Why? You ask? What is his role?
Basically, he is a contract. A nice contract, sorta. Apparently next year he has a nice fat non-guaranteed number
Bogans and Haywood are a combined $16,035,935 in completely unguaranteed contract next offseason. That's why.— Mark Deeks (@MarkDeeksNBA) September 25, 2014
So yeah, the Cavs game plan is very clear. They will be capped out for the near future, and they plan on using massive non-guaranteed money to supplant cap space as a way to acquire talent.
As far as the rest goes, I'm not sure Bogans can play, as he barely saw the court in Boston last year. He has a good reputation, and will be yet another hard working veteran in a radically new locker room that had little veteran leadership last season.