I dont think Ferguson should be gone by as soon as January..If he suddenly left the club in the middle of a crisis and worse, in the middle of a season, the club is more likely to be even in a bigger mess...He should have stayed till at least the seasonends..then man utd have much more time to find a new manager.
just hope they wont finish outside the top 4.
with their current form and problems it sure look a likely prospect.