Rorschach
Sonny Walters
Out of these guys + Sherwood, Bruce, McClaren, Capello, Yakin and Martinez would be a more correct poll
Levy will never go back to Redknapp (or Jol for that matter), nor the massive gamble of Howe, and Prandelli is staying with Italy after signing a new contract.
Klinsmann is also a no go, he's also signed a new contract with USA and want to remain there. Something can of course happen in the summer, but at the moment he's not available (like Ancelotti)
Roberto Martinez is actually a name that should be a candidate, would be difficult, but if we really want him he is possible with the right amount of money (probably not if Everton finish 4th)
Very slim chance he come to Spurs I'd say. He strikes me as a principled man and will stay loyal to Everton, for a while at least. Shame as he is perfect for this club, but there are plenty of other good candidates on the short list.