In 2012, which football team announced they were interested in moving permanently to Battersea Power Station?

In 2012 Chelsea submitted a formal offer to purchase the site of Battersea power station which, if it had been accepted, would have led to the club leaving Stamford Bridge and the development of "one of the most iconic football stadiums in the world" at a cost of more than £1bn.

That planning permission requires full restoration of the power station, at an estimated cost of £150m, which Chelsea would attempt to incorporate into the design for a 60,000-seater stadium, with all four chimneys and wash towers, along with the Grade II* listed west turbine hall and control room, to be retained in their original locations. The architect Rafael Viñoly has collaborated with the practice Kohn Pedersen Fox on the plans put forward by Almacantar, and Chelsea's initial proposal includes a 15,000 all-seated one-tier stand behind the south goal, with the stadium effectively built within the familiar brickwork shell of the power station.