No, I wouldn't even dream of it. Zero interest in him, there's no space for him on this roster.
Looking at the player Johnson is at this point in his career, I'd much rather use Turner in the backup SG/SF role, and we have too many bigs to consider using him as a PF in small ball lineups.
Only way it would make any sense is if wee use both guys together and go extra big with the second unit (Turner at PG, Johnson at SG, Jerebko at SF) but even that makes no sense because then you're taking minutes away from Smart.
Really no point to be honest, makes zero sense for us.
Also it's completely ludicrous for us to buy out David Lee - I cannot understand any reason whatsoever for us to do that. He's on the last year of his contract and expires after the season ends, and there is absolutely no interest in either end (his or Boston's) for him to return. If we can't find a deal to make with him by the trade deadline, then let him sit on the bench as an emergency backup and then enjoy the free cap relief at the end of the season.
He could still have value in the playoffs as am emergency backup if we get hit by multiple injuries, or if our bigs get in major foul trouble. Lee isn't the best fit on our roster, but he can is still serviceable and much more productive than people give him credit, so if no trade options arise then he is more useful to us on the bench than he is on another team.