Seol, who joined Asian champions Pohang Steelers from England's Fulham earlier this year to boost his World Cup hopes, has recently recovered from knee surgery.
Huh has until June 1 to trim his final squad to 23 players for the World Cup in South Africa, which begins 10 days after the deadline.
Goalkeepers: Lee Woon-jae (Suwon), Kim Young-kwang (Ulsan), Jung Sung-ryong (Seongnam)
Defenders: Cha Du-ri (Freiburg), Hwang Jae-won (Pohang), Kwak Tae-hwi (Kyoto), Kim Hyung-il (Pohang), Lee Jung-soo (Kashima), Lee Young-pyo (Al Hilal), Kang Min-soo (Suwon), Oh Beom-seok (Ulsan), Cho Yong-hyung (Jeju), Kim Dong-jin (Ulsan)
Midfielders: Kim Chi-woo (Seoul), Kim Nam-il (Tom Tomsk), Cho Won-hee (Suwon), Ki Sung-yong (Celtic), Kim Jung-woo (Gwangju), Park Ji-sung (Manchester United), Lee Chung-yong (Bolton), Shin Hyung-min (Pohang), Kim Jae-sung (Pohang), Kim Bo-kyung (Oita Trinita), Koo Ja-cheol (Jeju)
Forwards: Lee Seung-yueng (Seoul), Ahn Jung-hwan (Dalian Shide), Park Chu-young (Monaco), Lee Keun-ho (Jubilo Iwata), Lee Dong-guk (Jeonbuk), Yeom Ki-hun (Suwon)