Sunderland boss Steve Bruce was impressed by Ji Dong-won's performance for South Korea in victory over the UAE.
Bruce watched Dong-won play 72 minutes at the World Cup Stadium in Suwon on Tuesday.
"Firstly I must thank the Korean FA for their kind invitation to attend the game - we thoroughly enjoyed it," Bruce told safc.com.
"The Korean fans really got behind their team and Ji is clearly a crowd favourite. He looked lively and worked hard for the team, which stands him in good stead for Sunday's game against Arsenal."