A very brief word of mine on the names that have been appearing:
Zola - Not ready for the job yet and it's too much of a risk to take. I don't want our relationship broken with him if he turns out to not be the best manager at the Bridge. In a few years, yes. But only when he looks ready to take over us. Give him some experience at the Hammers.
Grant - We didn't think he was good enough last season, why should we think any different now? Appointing him would just highlight how far we've gone back in the last 12 months.
Steve Clarke - Although I would love him back in the backroom staff, he's unlikely to take that role and he's unproven as a manager.
Hiddink - He's been managing Korea, Australia and Russia in the last few years with a hint at PSV. Maybe he is too accustomed to international football now and isn't ready for an instant return to club management... Unspectacular.
Rikjaard - For me he's the best option at the moment. Did a good job at Barcelona, will have many contacts from them days, understands the importance of good football mixed with results and is a proven top club manager.
Mancini - Again, a very good manager and I would be excited if we appointed him. Did very well at Inter, my second choice.
Sven - Always have liked him, and I don't think he'd be the worst appointment by any means. Did well at England amd did well for City in his small tenure. My third choice.