Yeah, Hennessey, and Westwood, are 2 options, but as you say, definitely worse than our current backup. The question you'd need to ask is, if the worse came to the worse, and Hart suffered a serious injury, would you want Hennessey, or Westwood, playing week in, week out, for City. I'd suggest most would say something akin to "fuck no"!
Westwood was better than Hart the season Hart moved to City, he was a brilliant keeper for Carlisle, Hart got the top keeper award for div 2 but that was because of all the press interest and no fucker comes up to Carlisle so Westwood who had more clean sheets got nothing.
Westwood made the wrong choice in clubs moving to Coventry and then Sunderland, fair play to him for going to Sheff Weds to actually play games.
I was hoping he would have moved to us as the number 2 last season but he wants to play.