Son Heung-min was named in South Korea's World Cup squad after declaring himself fit.
The son had had surgery on his eye and was a doubt.
He told South Korea fans that he will play in the Middle East.
Coach Bento doesn't know when Son will be able to start training again.
Bento did not have that information yet.
We are in touch with him. We need to analyse his situation on a daily basis.
We have time to make a decision, but the most important thing is that he recovers well, and then we will make a decision.
South Korea and Bento's native Portugal will face each other in Group H, and if Son is to play, he will need a protective mask.
Kim Min-jae and Hwang Hee-chan will be looking to help their country reach the knockout stages for the first time in a long time.
Song Bum-keun and Kim Seung-gyu are the goalkeepers.
Kim Min-jae, Kim Jin-su, Hong Chul, Kim Moon-hwan, Kim Young-gwon, Kim Yoon-gyu are defenders.
Goalkeepers : Jung Woo-Young, Na Sang-ho, Paik Seung-ho, Son Jun-ho, Song Min-kyu, and Kwon Chang-hoon.
Son Heung-min is a forward for Spurs.