Ex-Big Brother boss Phil Edgar Jones, whose other TV credits include The Salon, Space Cadets and Shattered, has been given the task of finding the hit format.
"We have Phil Edgar Jones who is the master of cruelty," Murphy told the Edinburgh TV Festival. "He worked with Endemol and Big Brother. People forget from his CV though, he also did Shattered and Space Cadets. Massive and crazy things - and the craziest was Big Brother."
Going into detail about the sort of reality show he would like, Murphy said: "At Sky1 we have talked a lot of getting out of the studio. We really need something of enormous scale.
"We need people to say, I can't believe Sky did that. That's mental. Stuff that's enormous."
Murphy dismissed suggestions that the channel should attempt an X Factor-type show, claiming that he is "bored of the whittle". "The whittling down process shows are on other channels. Sky should give additional stuff to viewers," he said.