Individual match referees judge whether players’ haircuts are appropriate.
Some match officials in the United Arab Emirates enforce the rules because they are concerned about children copying the styles.
Similar guidelines have been enforced in neighbouring countries. In 2012, Saudi Arabia goalkeeper Waleed Abdullah was told to cut his “un-Islamic” hair by the referee before playing for his club side Al Shabab.
The UAEFA sends a player’s club a warning letter in the first instance, with punishments escalating to a fine and then a suspension if he does not comply.
Gyan is one of 46 players at the warning letter stage.