Actually, I think you could do a lot worse than Allardyce. This will be his biggest job in club football, and you may say what you want, but he is a competent manager. He'll get you sorted out, and get the players up for it. In addition, his teams are much easier on the eye than Pulis, who might well be in the running...
You looked relegation material at Southampton. While Unsworth is one of your own, he has no business being Everton manager. It would be like us appointing Keown or Henry, neither having any experience managing at this level.