Shocking footage has emerged of the moment Sheffield United player Oli McBurnie allegedly stamped on a fan as police requested an interview with the striker.

McBurnie, 25, can be seen in the bottom left corner of the video charging into the fracas during a pitch invasion at the City Ground in Nottingham, England, on May 17.

A second Sheffield United team member, who has not been identified and could be a player or coaching staff, first grabs the supporter in a red shit by the neck and hurls him to the ground.

The Scot appears to lift his legs a number of times. However, McBurnie later seemed to support a claim online that he was trying to step over the spectator while they were sprawled on the ground.

Police and the Football Association are now investigating the incident following the Blades' Championship play-off semi-final second leg defeat against Nottingham Forest.

It’s not known if police are aware of the second video or if they are aware of the second Sheffield United staff member, who grabbed the fan by the neck and threw him to the ground.

Inspector Andy Wright, of Nottinghamshire Police, said: ‘We have been made aware of a video circulating on social media showing a possible altercation where a Forest fan can be seen on the ground following the play-off semi-final.

‘We have now started an investigation into this incident.

‘The person in question has not yet reported the incident but would urge them to come forward along with any other persons who may have witnessed the incident or have video footage so we can establish the full circumstances.

‘We would particularly appeal to the owner of the original footage to make contact.’

McBurnie professed his innocence on social media, endorsing a tweet by a Sheffield United fan on Wednesday evening that said: ‘Wish that video was in full context - looks more like he was trying to step over him with one bad leg! Could be wrong!’

McBurnie replied with a '100' emoji, which is often used on social media to mean '100 per cent'.

Nottingham Forest won the game on penalties and will face Huddersfield Town in the play-off final at Wembley on May 29.