Marvelous Nakamba joined Premier League club Aston Villa in the summer
Aston Villa say they are "disgusted and appalled" by footage of supporters singing a racist song which references two first-team players.
The club has asked for other fans to assist in identifying those responsible for the "toxic" behaviour.
Villa have vowed to take action after their supporters' trust branded the chants "reprehensible" and "a cheap and insulting stereotype".