Actually, I went back and found the interview.. it's not "just a few months ago".. it was more than a year ago and I was wrong.. he says "three years"
The actual quote is (translated from Swedish):
"Paul Scheuring, who writes the show, is a friend of mine. In some way, I don't want to be an ass to him and the others, but I want to finish what I've agreed to do. He's got a three-year plan in his head and knows exactly what's going to happen."
The first part of the quote, where he says he doesn't want to be an ass and that he wants to finish what he's agreed to do, comes from him not enjoying the move to Chicago that was required to film the show.