It's normally Steve Evans who is the scary one, but read about the Millers boss' fear of Mick McCarthy when the pair met this summer.
http://www.itsmillerstime.co.uk/2015/02/evans-reveals-mccarthy-fear.html
There's nowt to fear about that dingle. He is an average manager when he has loads of money to spend. He would be pap as a manager on a budget.