After 'nightmare' Celtic debut: 'As I got on the bus, Hartson, a really good guy, was eating crisps & a fizzy drink. I said to myself: ‘Welcome to Hell'.'
On belatedly returning United club car: 'I’d given back the car. I drove some f****** miles in that car. Every little victory is vital.'
On Sunderland players' pre-match music: ‘Dancing Queen by Abba. What really worried me was that none of the players – not one – said: ‘Get that s*** off'.'
At Ipswich: 'There was the blue training kit. I don’t like f***** blue. City were blue. Rangers were blue. My biggest rivals were blue. Is that childish?'
Roy Keane's autobiography 'The Second Half', co-written with Roddy Doyle, is published by Weidenfeld & Nicolson.