Do you have any reads on the BB? Chances are the answer is no but....
I dunno if I like the turn call though, with, He 3 bet us PF and 3 bet our CR. I think we can narrow his hand range down fairly easily. Unless he's a loon we can probably eliminate KK from his hand. So we can probaly lean towards at least a better A from an unknown.
I think a turn fold is a pretty good idea here.