Ghana striker Asamoah Gyan could be in trouble with the United Arab Emirates Football Association (UAEFA) as he is is among a group of more than 40 players deemed to have "unethical hair".
Some match officials in the United Arab Emirates enforce the rules because they are concerned about children copying the styles.
Some set of Islamic teachings ban 'Qaza' hairstyles, where only part of the head is shaved.
Gyan is on loan at Dubai-based Arabian Gulf League side Al Ahli from Shanghai SIPG.
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, who captained the Black Stars of Ghana in the recently concluded Africa Cup of Nations in Gabon, is one of 46 players at the warning letter stage.