Well for one thing we know this Bruce Wayne is supposed to be in his formative years as Batman. He's already been through a lot. The last movie put him through the ringer with the loss of his childhood best friend/love interest/human anchor. That showed him what his mistakes can cost him. If Bane is indeed the heir/protege of Ra's al Ghul it's very possible that he knows all of this already, been watching from the shadows and is going to use psychological means to "break" Bruce.
I don't see Bruce having his back broken and then "rising" to save Gotham. There's not enough screen time in my opinion to depict that. I honestly don't think Nolan has any interest in that part of the Knightfall story line. I could be wrong, this is just my opinion after all based on speculation and a ton of guess work lol.