Lakers FO have made it clear over the years they will never try to save money in the sake of the team.
Not sure what you're saying but the Lakers have made it clear they will sacrifice talent to get better and shave MONEY off the salary. See D-Russ/Moz trade for expiring Lopez/27th pick.
Not sure why, with that as a precedent, you claim they wouldn't buyout Deng to save money.
I do agree that they'd rather trade him for an expiring. Better option for all involved. Doesn't mean it's possible or probable. Also doesn't make a buyout a bad option, just not as good.
If the Lakers can buyout Deng for half what they owe him (54M over the next 3 years, this year included), that's huge. Would it be enough of a saving? Not sure. Would Deng agree to it? LOL...seriously doubt it.
Is a buyout likely? No...but not because the Lakers wouldn't agree to it.