I really enjoyed Paul Tomkins 'Golden Past, Red Future' book.
It's less statistic filled than his later work, and reflects how the season went back in 2004/05 - both the highs and lows, and the decisions made that led the club to appoint Rafa, and where they were planning to go from there.
Well worth a read - if you can find a copy (ebay or Tomkins himself may be the best bet)