I saw a rumor about the Celtics looking into bringing back Daniel Theis. This idea made little sense to me, because where would he fit? He makes too much to be a third big behind Horford and TL, we're not trading TL, and Horford to Houston didn't make much sense. But then, what if Theis isn't the real target from Houston, but a secondary piece?
With Horford's deal only partially guaranteed next summer, Houston wouldn't have to do the awkward dance they're doing with John Wall -- he could just be released if they didn't want to play him. Houston clears salary the next two years and gets another prospect. The Celtics get a guy who can actually be a shooter/scorer off the bench (44.5% from 3 on 5 attempts per game), while getting a big who has paired well with TL in the past (+17.4 net rating when on the court together last year, albeit in limited opportunities). C's also get under the tax.
I think Houston probably wants a pick too, but I think the C's shouldn't make the trade if that's what it came to. Gordon's shooting great this year, but it's a major spike from his recent levels at age 33, His contract isn't bad, but it's not a bargain.