Fans from both clubs are upset with the Scot's move.
But he said: "I've got to have thick skin. I managed Rangers. I got it in the neck from those fans up there at times and I came through that and I'll come through this.
"That experience doesn't make me absolutely totally used to it. No one can ever get used to it.
"But I am thick-skinned, I've had experience of it and that should stand me in good stead.
"I won't say it won't ever happen again but I've got to show the fans I can turn it around and hopefully the fans chanting against me coming here, will be chanting my name."