Given the brand of football we have invested in with Gus, I can't see anyone other than one of his old gang being a next manager when he eventually goes (I still don't think it will be Reading).
So on the basis:
Gianfranco Zola - might be up for it after an interim appointment if Watford don't...
Bloom is pals with Dennis Wise isn't he. And of course Gus would give him the nod IF he goes.
My top choice would be Zola. Di Matteo would do or how about Gianluca Vialli as a long shot?