Starts in August
The player is expected to play a feature role in China's 22-man squad for the tournament which takes place between the 6th and 23rd of August.
Dong looks certain to play against Red Devils team-mate Anderson as China have been paired in Group C along with a star-studded Brazilian squad; plus New Zealand and Belgium.
Brazil are determined to win the gold medal in Beijing and have named Robinho and Ronaldinho as allocated 'over-age' players in an impressive squad.
Both Anderson and Dong could miss the start of United's season should their respective nations advance from the group stages.
China and Brazil do battle at the Shenyang Olympic Stadium on the 10th of August. The final is thirteen days later at the National Stadium.
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