Roy Keane was responsible for some awful challenges during his time as a professional footballer.

The Irishman's worst challenge was undoubtedly on Alf-Inge HÃ¥land.

He also clashed with current England manager, Gareth Southgate, on the pitch.

On April 12, 1995, Crystal Palace and Man United met at Villa Park for their FA Cup semi-final clash.

The game was a feisty affair as tensions flared on more than one occasion.

In one moment, Southgate flew into a challenge on Keane and tried to take him out.

Keane stayed on his feet and reacted with a brutal stamp, sparking a mass brawl.

Keane and Southgate became colleagues after their playing careers came to an end as they both worked as pundits for ITV Sport.

In 2013, they both covered the FA Cup semi-final clash between Chelsea and Man City.

Sergio Aguero produced a brutal challenge on David Luiz that day.

Manchester United v Crystal Palace - FA Cup Semi-Final - 12/4/95. Pic:John Sibley/Action Images

Utd's Roy Keane stamps on Palace's Gareth Southgate

And, when referencing the challenge after the game, Southgate felt the need to bring up Keane's stamp on him nearly two decades prior.

He said: "That's the worst tackle I've seen in a semi-final since Keane tried to castrate me at Villa Park around 15 years ago… although in fairness, that was retaliation as well!"

Southgate's comments bought a smile to Keane's face, who felt it was only right to apologise. View the moment below...

A year later, Keane admitted he crossed the mark but said that Southgate deserved some of the blame.

"It probably was [out of order]," he told FourFourTwo, per Independent.ie.

“But in my defence Gareth tried to cut me in half with a tackle. No one remembers that. He only got a yellow card whereas now he would probably get two months in prison. There was an element of self-defence with the stamp.

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“There was some needle in that game and I had already got a knock on my ankle. I wasn’t going around stamping on people for the sake of it.

“I have said to Gareth since then that my advice to defenders is you always have to stay on your feet. So some of it was Gareth’s own fault.”

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