The former Manchester United manager has pulled no punches in his tell-all tome as he lifts the lid on life running one of the world’s biggest football clubs.

One ex-player to feel the force of  Fergie’s wrath is former United captain Roy Keane.

Now Roy’s mum Marie has joined in the argument revealing that she is unhappy with Ferguson’s comments about her boy.

In an interview in the Irish Sun, Mrs Keane said: ‘God Almighty, I can’t believe Sir Alex would say such things about Roy.

‘I can’t believe it. I would never have thought he would do something like this.

‘He’s our son and he has a wife and children and it’s not nice for any of us to be hearing someone run a loved one down like that.

‘It’s all very nasty what he said. It’s nasty really. It’s terrible and I’m very upset.’