Manchester United star Romelu Lukaku has pleaded with the club’s fans to stop singing about his penis in one of their chants.

The song, which has been heard at Manchester United games, goes “Romelu Lukaku… He’s our Belgian scoring genius, with a 24-inch penis.”

In a tweet, Lukaku pleaded with fans to move on from the chant.

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The club has already been reported to the Premier League by anti-racism body Kick It Out, who claim the song is  “offensive and discriminatory.”

The FA has in turn contacted the club, asking them to address the issue.  Those efforts will intensify after the FA made contact on Tuesday to ask them to reveal what is being done to address the chants, given that it depicts a racial stereotype that can be deemed offensive.

Under the current Football (Offences) Act 1991, it is an offence for any individual to engage or take part in chanting of an indecent or racialist nature in connection with a designated football match, which is defined by “matter which is threatening, abusive or insulting to a person by reason of their colour, race, nationality or ethnic or national origins”.

Chelsea were in a similar situation with new striker Alvaro Morata, and have issued a statement earlier this month to confirm that anyone found singing the chant at Stamford Bridge will be prosecuted.

“We made an initial statement after the game and we are happy to repeat, but also make clear: Chelsea Football Club finds all forms of discrimination abhorrent and the language that was used in that song the other night we find totally unacceptable,” a Chelsea spokesman said following the game between the Blues and Leicester City on Saturday 9 September.

“People that use this kind of language against others always try to argue a grey area. There is no grey area. That language used was anti-semitic.

“We have a zero tolerance policy towards it. If there is evidence that season ticket holders or members took part in that, and take part in it in the future, then we will take the strongest possible action against them, which includes bans.

“People should know that the police will be investigating and they will investigate all future such episodes. And we will support the police in anything they need us to do, assist their enquiries, and we will also support criminal prosecutions of such behaviour and activity.

“We must be clear on this because it has to stop.”