Germany coach Joachim Low has reiterated he opposes plans to expand the FIFA World Cup from 32 to 40 teams, saying it will dilute the quality of the tournament.
"The sporting value can not be diluted although I understand the smaller nations who could enter the big stage in this way," Low told the Welt am Sonntag paper.
Gianni Infantino, the new president of the ruling body FIFA, is in favour of a 40-team World Cup from 2026 onwards.
The issue is to be discussed by the FIFA council at a meeting in mid-October.
A bigger tournament would mean more matches for the teams and the 2014 World Cup-winning coach Low warned that the players have already reached their physical and mental limit.
"We must be aware that the quality will suffer in the long run. We not overdo it," Low said.