Neither NextEra nor Wynn would comment, and all a spokesman for Constellation would say is that the company hopes to conclude the sale process by the end of March. The Krafts, who own the team, have been looking for a home for the Revs for years, to move the Revs out of Gillette Stadium in Foxborough and closer to Boston Constellation’s site is considered one of the best remaining spots for a standalone soccer stadium. The casino operator could use the power plant land to make the entire stretch more of a destination, possibly even by offering space for the New England Revolution soccer team. It could improve the views around the casino by demolishing much of the power-plant infrastructure (an Eversource substation would need to stay), and the company has already started to develop 13 acres just to the north, directly across the street from the casino. Meanwhile, Wynn would be a logical buyer. NextEra, Lattanzi said, seemed interested in a connection point for underwater transmission lines, possibly from a to-be-built offshore wind farm (though NextEra hasn’t announced any plans for offshore wind farms in New England). Matt Lattanzi, the city’s planning director, said that in recent months, the contest was down to two bidders: another energy company, NextEra, and the owner of the casino, Wynn Resorts.