Middlesbrough boss Southgate calm over Lee injury
Southgate said: "I have spoken with Dong-Gook's representatives and they assure me that the injury is not an issue.
"I think that everything around the Korean camp will be big news in their country but it's not an issue for us.
"Dong-Gook is in the Korean squad and I am assured he will be considered for selection. The injury has been described as niggly by the media but I am told that it is nothing which will hinder him.
"He wasn't suffering from any undue problems at the end of last season and so we would expect him to return fit and ready to play once the Koreans' interest in the Asian Cup is ended."