Why would Boston not do that? Get a look at Reddish and basically replace Smart with Huerter. Plus would have probably gotten Hill. Would have had to cut 2 players, but given Fernando, Bol, and Dozier are all basically worthless to this season, it isn't like there aren't options (plus you could always cut Hill). Boston probably pays the tax and would leave itself weak at PG, but that is clearly a trade that would have benefitted Boston long term.