Chelsea have gone to the top of the tree as they seek to revamp Stamford Bridge.

The architects who designed Beijing's Bird's Nest stadium and Bayern Munich's Allianz Arena are looking at ways to increase the capacity of Stamford Bridge towards 60,000.

According to the Architects' Journal, Herzog & de Meuron are working with Lifschutz Davidson Sandilands to potentially design a revamp of Chelsea's 41,837-seater stadium to satisfy demand for tickets at the Premier League leaders' home.

Chelsea, who have previously looked in to building a new stadium at Earls Court, White City and Battersea Power Station, announced in June they had commissioned a study into how Stamford Bridge can be expanded.