Will Alsop, head of SMC Alsop, told The Architects Journal that the scheme would be "a huge mixed-use development that would be based round the re-jigging of The Den and a little bit beyond.
"It would put football at the heart of the community, along with arts and eating, drinking, living and a bit of working."
Mr. Alsop's plans have yet to be submitted to Lewisham Council but it is hoped that the scheme will involve the new tube station - Surrey Canal Road - that is currently under construction.
Millwall chief executive Heather Rabbatts confirmed that the club had appointed Alsop and issued the a promise to supporters. 'Whatever we do at Millwall," said Rabbatts, "The stadium and the club's fans will be at its heart."