QUEENS Park Rangers' defender Yun Suk-young has been told he cannot face Derby County in the Championship play-off final at Wembley.
Yun has been named in South Korea's 23-man squad for next month's World Cup in Brazil.
And national coach Hong Myung-bo has asked for the full-back to be released by QPR for a training camp in his homeland.
"If Yun reports to the camp late, then it could set a bad precedent," Hong was quoted as saying by the Yonhap news agency. "There's no shift to our stance that Yun must be here at the earliest date possible."
FIFA has designated May 19-25 as an "official rest period" for players selected for the World Cup, apart from those involved in the Champions League final.
Derby take on QPR for a place in the Premier League next Saturday (May 24).
Yun came on as a substitute in both legs of Rangers' play-off semi-final against Wigan Athletic.
Another QPR player, Niko Kranjcar, is in Croatia's World Cup squad but has been given permission to play at Wembley.
