Since his £3.75 million (the synopsis above has the figure wrong) move from Nottingham Forest to Manchester United, Roy Keane has probably been the most influential player in English football - it is Keane's extraordinary "engine" (the word comes up a lot in the interviews in the book) and ability to read the opposition that allows Manchester United to have played Paul Scholes in such a forward role). Hildred and Ewbank have written a pacey biography telling the story of Keane's rise from schoolboy football in Cork to be captain of the world's richest club side, but they never really pin down the Keane phenomenon, either in footballing terms (the growing importance of fitness and pace; Keane's switch to a deeper role than he played at Forest; the needs of European football) or in its psychological dimensions (the relationship between the competitiveness at the heart of Keane's game and his record of boiling over). Nonetheless, much food for thought, including Keane's wish to play for Celtic before he retires.