I think the trial balloons of Wolfie and Carly have popped. There was the Washington Post op-ed that critiqued Carly (suggesting that it would be contrary to this administration's rhetoric to choose a failed private sector leader to a public sector post), and the Europeans won't abide Wolfie. David Brooks' attempted rehabilitation of Wolfie today tilts at windmills.
The WSJ hasn't come out swinging against the Bono trial balloon, but i can't imagine that the Administration would want that headache (Bono will make demands that the US increase and honor its foreign aid pledges), though there are good political points to gain from Bono's nomination: He's associated with Catholicism (the Jubilee movement for debt forgiveness), he's Irish, and he's cool.
I doubt the much less controversial Zoellick will get the nod because he's already been appointed to the post that Bolton had wanted at State--Deputy Secretary of State.
So I'm drawing a blank.