Would a retired researcher mentor a postdoc with his/her own external funding? What about one without external funding? I'll be completing my Ph.D. soon, and am reaching out to people who I'd like to serve as my mentor. Two questions with regards to "academically" retired researchers:  


If I have external funding, would emeritus faculty be interested in mentoring a postdoc?  
If I don't have external funding (so would require my mentor to fund me), would a retired researcher from a research institution, or retired faculty, take on a postdoc, i.e., willing to spend time with and pay someone?  


I have never seen this happen (though I haven't really looked into this), so I'd like to know if being a postdoc for someone retired is even possible. Both people I'm considering are still somewhat active in research (publishing papers, responding to emails).
I'm sure you'll find people who are "retired" (from administrative duties, from chasing the next funding proposal) and still are hard at work, while others just want to stay at home and look at the lake in front of the window.

If one of them would take you on as mentoree (made up word, I know) is anybody's guess. Perhaps they retired in part to be free of having to deal with pesky students. Maybe you are so outstanding that you lure the hermit back into active work.