Spain captain Sergio Busquets has expressed his concerns at FIFA's proposals to hold the men's and women's World Cups every two years.
The men's World Cup has taken place every four years since the inaugural edition in 1930, aside from in 1942 or 1946 due to the Second World War, while the women's World Cup has followed suit since it was first staged in 1991.
Former Arsenal boss Arsene Wenger has been campaigning for the change in his role as the governing body's chief of global football development.
Meanwhile, the FIFA congress in May saw a vote go heavily in favour of carrying out a feasibility study into the project.
On Friday, UEFA president Aleksander Ceferin said the European governing body had "serious reservations and grave concerns" surrounding the concept.
Busquets has supported those views, expressing his concern for the potential impact the change would have on players.
"We have little voice. Less and less is looked at by the player," the Barcelona midfielder said.
"There will come a time when the player is going to explode. I see it as very difficult.
"You have to sit down and value it. You have to see it from many points of view, not just wanting more."