FIFA is currently exploring the idea of doubling the frequency of the competition but the UEFA chief is worried about the impact of such a move
UEFA has "grave concerns" about plans to hold the World Cup every two years, president Aleksander Ceferin says.
The idea to make the tournament a biennial event has gained traction since it was first raised at a FIFA congress in May and the governing body is carrying out a feasibility study.
But Ceferin is upset by FIFA's lack of consultation with UEFA and the impact that such a move would have.