"The two players made big contributions to South Korea to win two straight matches," Shin said. "Paik has improved his stamina, but he looks tired and he needs rest."

The two Barcelona youngsters have two goals apiece to lead South Korea's run at the U-20 World Cup. Lee, who is with FC Barcelona Juvenil A, scored South Korea's opening goals in their last two matches, while Paik scored the team's third goal against Guinea and converted a penalty against Argentina.

Shin said he will rotate the squad and use those who haven't played much with the team against England.

"It's not about boosting the morale of the players who have yet to play," he said. "We can win and we want to leave an impression that we can play a good game with other players."

Shin emphasized that South Korea are looking to win the group, so that they can meet relatively easy opponents in the round of 16. England are currently No. 2 in Group A after beating Argentina 3-0 and playing to a 1-1 draw with Guinea.

The Group A winners will meet a third-placed team from Group C, D or E. In this 24-team FIFA competition, the top two from each of the six groups and the four best third-placed teams advance to the round of 16.

"We are not going to rest in the match against England," he said. "We will use the players who have lots of energy left and will change some tactics to win the match."

South Korea have never finished the group stage with three wins at the U-20 World Cup. But Shin said his side will not overwork against England.

"If we push too hard against England, then we can have some problems in the round of 16 or in the quarterfinals," he said. "We'll just do what we have been doing." (Yonhap)