Who should be Cincinnati Bengals next head coach?

Jan 2010
Since Marvin Lewis Contract is up this year, who do you think will be the next Bengals head coach or will he still be here? Here are my Head Coach candidates:

1. Mike Zimmer
2. Tony Dungy(if cheap Mike Brown paid him alot of money)
3. Bill Cowher(Doubt it)
4. Brian Billick
5. Jimmiy Johnson(Just Joking lol)

what do you think?