NHL commissioner Gary Bettman speaks at a news conference before the NHL Awards show Wednesday, June 24, 2015, in Las Vegas. The NHL is officially exploring expansion. The league is opening a formal expansion review process to consider adding new franchises to its 30-team league, Bettman announced Wednesday, June 24, 2015. Las Vegas, Seattle and Quebec City are the markets that have expressed the most serious interest. (AP Photo/John Locher)

"I think it's fairly clear that playing hockey isn't the same as playing football and as we've said all along we're not going to get into a public debate on this.”