Jack Jebb, the Arsenal youngster, has been suspended for four matches for using racist language.
The 18-year-old, billed as a "technically-gifted central midfielder" by his club, was found guilty of "using abusive and/or insulting words, including a reference to ethnic origin and/or colour and/or race".
The incident happened in a match against Norwich City last season and match officials are said to have lodged the complaint.
Any discriminatory abuse must be met with a minimum five-match ban, according to the Football Association, but because the incident occurred in the 2012-13 campaign Jebb was instead handed a four-match ban and a fine of £1,800.
Jebb is also an England youth international and has been capped at both Under-16 and Under-17 level.
He is yet to make his Arsenal debut.