Paris Saint-Germain forward Kylian Mbappe and Bayern Munich striker Robert Lewandowski have said they are not keen on FIFA's plan to hold the World Cup every two years amid growing concerns over player welfare.

FIFA president Gianni Infantino said at a "global summit" of leaders of national football federations earlier this month that he believes he has enough votes to increase the frequency of the World Cup from every four years to two.

There has been opposition from European clubs, the top leagues and European governing body UEFA, whose president, Aleksander Ceferin, has threatened to boycott any additional tournament.