Conor McGregor mocked after being spotted shadow boxing at Anthony Joshua fight

McGregor was heavily involved in the fight on Saturday night

Joshua had been set to face Dillian Whyte until the latter was pulled from the show last weekend after “adverse analytical finding” were detected in his doping test.

Helenius then agreed to step in at the last minute – and just one week on from his last fight – to ensure the sold-out event at the O2 Arena could go ahead and largely gave a good account of himself with those in attendance even heard booing the former Olympic champion.

The 33-year-old was able to duly deliver though and delivered a fatal right hand to knock down his Finnish opponent and secure his second victory on his comeback trail.

McGregor was heavily involved in the proceedings and came into the ring to jeer the crowd up while also watching on from ringside however it was his antics while the fight was on that left people confused on social media.

Video footage appears to show the Irishman shadow boxing and those who spotted it joked about his behaviour.

One person wrote: "Im so convinced i could batter McGregor."

A second said: "Yer da watching Lee Bowyer and Kieron Dyer scrapping on the Premier League Years."

"What in the lilikeisaid is going on eereeeee," posted another.

"There’s literally YouTubers boxing who I like more than him," said a fourth.

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• Tyson Fury takes swipe at Anthony Joshua after bizarre video surfaces online