Footballer will be joined by singer Leona Lewis
The footballer, 33, will be driven into China‘s national stadium, the Bird’s Nest, onboard a red double decker bus.
He will then kick footballs with children representing every country in the world.
‘David is going to be in the surprise finale,’ a source tells People.
‘They always have a segment to do the handover, to showcase the next city to host the Olympics.
‘He was very involved in the London bid to get it, and as a Londoner he is incredibly proud that the Olympics will be in London.
‘He is passionate about it and looking forward to the games in 2012.’