Norwich City player Brandon Williams has claimed he was "taunted and abused by fans" following his team's 4-0 defeat to West Ham United on Sunday.
The 21-year-old full-back said he was targeted by fans surrounding Carrow Road and was "followed by individuals".
"However passionate fans are it is not right that a small minority abuse players or, in this case, follow them," he said in a statement on Twitter.
The club said it was aware of the incident and had spoken to Williams.
A few hundred protesters had gathered outside Carrow Road after the thrashing by the Hammers, the team's first home tie since they were relegated from the Premier League with a 2-0 defeat at Villa Park on 30 April.