The reason a move seems likely now is that the owners of three teams are willing to put up the total cost, or close to it, of building a new stadium there. They have also arrived at the point where they can get out of leases in their home markets.

But the league owners have not reached a consensus on how to proceed.

Some owners favor a plan by the owner of the Rams, E. Stanley Kroenke, to build a domed stadium on the southwest fringe of Los Angeles, as part of a retail and entertainment district in Inglewood, Calif. Other owners like the proposal made by the Chargers and the Raiders, which calls for an outdoor stadium in Carson, about 15 miles south of downtown Los Angeles, that would be built by a venture with Disney’s chief executive, Robert A. Iger, at the top.

Before moving forward, the owners must, according to their relocation guidelines, take into account what Oakland, San Diego and St. Louis have done to keep their teams.

St. Louis has done the most. It cleared many legal and financial hurdles in planning for a new $1 billion stadium, largely government-funded, on the banks of the Mississippi River. The Rams have not publicly commented on the stadium proposal.