The Premier League are going to quiz Tottenham Hotspur on why they aren't implementing heading limits in training after Nuno Espirito Santo revealed the club are ignoring the guidance.
Football's authorities have taken a dim view of a club admitting they are not following the guidelines, which were put in place to protect players amid fears of a link to dementia.
The recommendation at the start of the season was that footballers at professional level should be limited to 10 high-force headers per week. Nuno said Tottenham are not counting headers in training and sources say they aren't alone in snubbing the guidance.