Kick It Out, football's equality and inclusion organisation, has contacted Manchester United to raise its concerns about a song some of the club's supporters are singing about their new centre-forward, Romelu Lukaku.

The lyrics are set to the tune of The Stone Roses' Made of Stone and conform to the racist stereotyopes about the size of black men's penises.

Kick It Out told The Times that the lyrics used in the chant were "offensive and discriminatory. Racist stereotypes are never acceptable in football or wider society, irrespective of any intention to show support for a player."

Scott Patterson, author of the Republik of Mancunia blog, wrote on Monday after hearing the chant outside Old Trafford on Sunday when United defeated Everton 4-0.

"I was embarrassed to hear that song and want us to be better than that," he wrote.

"It’s a cheap and insulting stereotype that has no place in this day and age."