Manchester United say they are "disgusted" after Axel Tuanzebe and Anthony Martial were racially abused on social media by "mindless idiots" after Wednesday's loss to Sheffield United.
Both players started the 2-1 Premier League defeat at Old Trafford.
Former United defender Rio Ferdinand called it a "disgrace", adding: "These ignorant idiots need to be exposed so everyone can see them for what they are."
In a statement, the club said: "Everyone at Manchester United is disgusted by the racial abuse received by players via social media after last night's game.
Anti-racism charity Kick it Out said the continued abuse of players on social media is "completely unacceptable" and reiterated its stance that those responsible for online hate must face "real-life consequences".
The Professional Footballers' Association (PFA), the players' union, has encouraged Tuanzebe and Martial - as well as any other player targeted by racial abuse - to "press charges".
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