Do we really want to go down the route of unemployed English managers? Undoubtedly, these appointments would be more exciting and inspired than the usual lazy shouts of McPherson, Hughes, et al, but I would be extremely wary.
These are managers who are used to working with money, and in some instances buying their way out of trouble. As far as I know, none of the bigger names that have been knocked about have any experience of the game in Scotland (and Aberdeen's position within it) and its' peculiarities, and I'd wager they would all come with heavy wage demands. I'd also imagine that Aberdeen might as well be in Siberia, it's so far out of the comfort zone for journeymen managers in England.
I just don't think it's particularly realistic to be looking at names like Curbishley.