Fifa has banned Chelsea defender Slobodan Rajkovic for 12 months after spitting at an official during the Olympics.
The Blues youngster is currently on a season-long loan to FC Twente, but his career will now be put on hold.
Fifa has acted after Rajkovic spat at referee Abdullah Al Hilali during Serbia's loss to Argentina.
"At its 1st September 2008 meeting, the Fifa Disciplinary Committee decided to suspend Slobodan Rajkovic (Serbia) for 12 months for spitting at the referee on 13th August 2008 after the Argentina v Serbia match at the Olympic Football Tournaments," said a Fifa statement.
"This suspension applies to all national and international matches including club competitions. This decision may be appealed."
19-year-old Rajkovic joined Chelsea from OFK Belgrade when he was just 16 in 2005, but he was loaned back to the Serbian outfit for two years.
He then spent last season with PSV Eindhoven before joining FC Twente this term.