The logical suitor for Bass is a playoff team that sees Bass as an upgrade over either their starting PF or their first big off the bench and is willing to give up a younger, taller, more athletic underperforming big who they have given up on, but who Ainge thinks will blossom in Boston despite not matching the production level of Bass so far.
Does such a team exist?
Denver??
They've got TPE from Nene trade and Mozgov, who's not getting any playing time. I don't remember where I read it, but they're supposely looking to improve their spacing and are quite thin at PF spot (only Manimal and A.Randolph on their roster? Btw, is Faried a PF or SF?).
I'm not sure they'd want Bass that much, but that could be a nice trade from Boston perspective. Get a better backup 5 and shed 3mil in salaries, so that we could chase some help with BAE...
I've got no other ideas.
///edit:
Actually, I just remembered, that during the Rockets-Lakers game this week, the broadcasters discussed Rockets need for upgrade in production at the 4 spot. But they should have a nice chunk of cap space next summer, so I doubt they would give it up on Bass. Secondly, it's not like they have any centers to spare.