US President Donald Trump has warned FIFA would be making a “terrible mistake” if it got rid of Gianni Infantino as the head of world football’s governing body. He wrote: “FIFA would be making a terrible mistake if, for any reason, they even considered replacing President Gianni Infantino. “He is fantastic, having just presided over the most successful World Cup, by four times, ever presented. FIFA would be making a terrible mistake if, for any reason, they even considered replacing President Gianni Infantino. He is fantastic, having just presided over the most successful World Cup, by four times, ever presented.