South Korea manager Paulo Bento has has criticised the lack of time between games at the World Cup.
Bento's side beat Portugal to progress to the knockout stages and are now set to face Brazil just three days later on Monday.
Speaking about the short turnaournd, Bento said: 'In my opinion, I don't think it's fair to play games after just 72 hours.'
Brazil also played on Friday but were able to rest most of their starting XI having already sealed qualification.
And Bento knows his side are up against it.
'It's difficult to play against such a great team like Brazil,' he added.
'Brazil has the likelihood of wining the World Cup, in my opinion.'
Neymar has returned to training but he remains a big doubt to feature on Monday.
'We would be hypocrites if we said we'd prefer playing with Neymar, that's a lie,' Bento continued. 'We would prefer he wouldn't be in the field of play.'
Brazil won two out of three of their group games, losing late to Cameroon in their third match. They came top of Group G.
South Korea, on the other hand, beat Portugal, drew against Uruguay and lost to Ghana, finishing second in their group.