This is what happens in the "Legacy" arc that I kind of was alluding to above...
Bane encounters the League of Assassins and eventually Bane impresses Ra's al Ghul so much that he chooses Bane as his heir (an "honor" he had previously imparted on Batman).
Ra's al Ghul and Bane then launch a plague
attack on Gotham in the "Legacy" storyline. Bruce Wayne, again costumed as Batman, gets his rematch with Bane in Detective Comics
#701 and finally defeats him in single combat
Maybe this is the source material for how they're going to be using the character if the report turns out to be true.