FIFA: Reports of the so-called 'blue card' at elite level of football are incorrect and premature. Such testing, if implemented, should be limited to tests carried out responsibly at lower levels.

In France, the white card, an equivalent of the blue card, is already introduced in several leagues at the amateur level. It has also been tested in other countries. In January, Aleksander Ceferin, the head of UEFA, decried it: “It's no longer football’