As is a surprise to precisely nobody, the National Football League is a business, and as a business, part of their model consists of a continual eye for expansion, especially in the expansion of new markets.
Every offseason for the past few years now, there have been intense rumors, for example, that a current NFL franchise would move to Los Angeles, which has hosted a few teams in the past, but has been vacant of an NFL team for some years now. More recently, there has even been the suggestion that multiple teams could be playing there.
As the league continues to expand its lead as the largest professional sports brand in North America, it has also continued its global outreach, continuing to expand its foothold in particular in England, where it will hold three regular season games in 2015.