Yeah this. Its amazing how much a team can change in a season one way or another.
Nobody expected us to go so bad so quickly and to an extent it can go the other way too.
City went from being laughed at a bit in the media and Guardiola getting comments about him losing it, to the best team in the world in about 6 months mate. Chelsea went from champions to shambles, to champions again to on the verge of another shambles/sideshow, in 4 seasons.
All it takes is 2 good appointments, one leading to the first to make a huge difference, a proper DoF and a manager who fits in with the DoF and can lay the foundation down for the way the club will be going long term.
We went from 15th to 7th to 17th to 4th to 11th to 6th in
Moyes first 6 seasons, went from 5th and looking on the verge of something special, to 11th and looking close to a total collapse under Martinez in two seasons, from 7th and a mile ahead of the rest to whatever this season is.
Thats only looking at the 'modern' era, same swings happens under Royle, Kendall, Catterick and pretty much most managers in the clubs history.