Aston Villa's English midfielder Jack Grealish (L) applauds the crowd after the final whistle during the English Premier League football match between Aston Villa and Everton at Villa Park in Birmingham, central England on August 23, 2019.
The 24-year-old apologised in a video posted on Twitter before the club said they would discipline him.
"I knew straight away that I had to come out and apologise myself," the Times quoted Grealish as saying. "I didn't want to hide behind a club statement. I'm old enough now and mature enough to know I'd done wrong.
"Since then I've tried to keep my head down, work hard and do as much charitable work as possible.
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"I raised money for the NHS by raffling off my shirt I wore in the game against Birmingham City."
Media reports said the shirt raised over £55,000 for the National Health Service and that Grealish had also donated 150,000 pounds to a local hospital.
"I know I'm a footballer but I'm still human and we all make mistakes," Grealish added.