South Korea coach Hong Myung-Bo criticised his defence following the 4-2 defeat to Algeria and may opt for a reshuffle.
QPR left-back Yun Suk-Young could be a casualty, as could shot-shy striker Park Chu-Young of Arsenal.
Belgium may hand a start to striker Divock Origi, who could replace the out-of-form Romelu Lukaku.
The Belgians are already through to the last 16 so coach Marc Wilmots is likely to rest players on a yellow card.
DATE: June 26, 2014
TIME: 21:00 BST
VENUE: Arena de Sao Paulo, Sao Paulo
POSSIBLE LINE UP:
SOUTH KOREA: Jung Sung-ryong; Yuk Suk-young , Kim Young-gwon, Hong Jeong-ho, Lee Young-joon; Ki Sung-yueng, Han Kook-young, Koo Ja-cheol, Son Heung-min, Lee Chung-yong; Park Chu-young.
BELGIUM: Courtois; Vertonghen, van Buyten, Kompany, Alderweireld; Fellaini, Witsel, Mertens; de Bruyne, Origi, Hazard.