Boston sends: Paul Pierce
Denver sends: Wilson Chandler, Kosta Koufos, Andre Miller
Denver cashes in some role players and gets a leading scorer/stop gap while Gallo likely misses most of or all of next season. Only on the books for a year, there's no long term commitment and they can decide what to do when Gallo returns while staying in contention.
Lawson
Iggy
Pierce
Faried
McGee
Boston gets a reasonably young and skilled center in Koufos. Chandler has been somewhat injury-prone lately but is still only 25 years old and on a very reasonable contract. Miller is included for salary purposes