Marvin Sordell has been targeted on Facebook for claiming Millwall supporters racially abused him after a sick death threat was posted on the social networking site.
A mocked-up image of Sordell bleeding after being shot was accompanied with the message "Don't f*** with the Millwall" by a user.
Sordell claimed he and Bolton team-mates had suffered racist abuse when the Trotters played at the New Den on 6 October. The Football Association and Metropolitan Police are both investigating the Team GB striker's allegations.
Sordell, 21, was involved in the brawl which occurred between Serbia and England's Under 21 teams on Tuesday night, when team-mate Danny Rose was subjected to monkey chants by sections of the home crowd.