Not unlike the Seattle city council recently giving the okay for the new Sonics SoDo arena, the Los Angeles city council just unanimously approved the development of a new $1.5 billion stadium next to Staples Arena. And just like the Sonics plan, ground will not be broken until an NFL agrees to move (said team will, probably, play in the L.A. Coliseum until the already-named Farmer's Field is completed).
There's already plenty of speculation on which team(s) will move, and remember that the NFL has required any team to make its intentions to move known sometime between January and February 15th. Also noted in the article is that billionaire Patrick Soon-Shiong is interested in buying AEG (the company building the new stadium), and he might look to purchase a team to move to LA.