West Ham United and the London Borough of Newham are inviting bids for the £100m conversion project of the Olympic Stadium into a football ground.
Bidders will be required to execute design and construction works to convert the London 2012 Olympic Stadium into a multi-use venue.
The converted venue is expected to have a capacity of 60,000 for football matches, 74,000 for athletics meets and 90,000 for concerts.
The scope of the work will include extending or replacing the roof so that it covers most of the seating, installing hospitality facilities, corporate boxes, office or retail space along with the construction of a community warm-up track.
The winner will be expected to complete work on the project by May 2014.