Packages such as
ftnright allow the placement of footnotes in the the right column only, when using
twocolumn. Is there an equivalent to allow the placement of footnotes on the inside column only? (That is to say, looking at a double page spread, in the right column on the left page, and in the left column on the right page.)
I looked on CTAN to see if there were any packages that might help, but couldn't find any; the most promising (initially) was
fnpos, but this appears to only manipulate the vertical placement of footnotes.
I don't have an MWE since I am entirely sure how to start going about this.