Terry Flanagan, 34, is a retired pro fighter and major City fan who held the WBO lightweight title between 2015 and 2017.

A former world champion boxer jumped on Man City star Erling Haaland before being removed by security

Terry Flanagan was over the moon as Haaland scored against Sheffield United

Flanagan is a former world champion boxer

He held the WBO lightweight title between 2015 and 2017

Bernardo Silva looked stunned as Flanagan appeared to kiss Haaland’s neck

He lost just two of his 38 fights, recording 14 KOs in the process.

But Flanagan is unlikely to have celebrated any of his wins more than Haaland’s timely strike.

The incident occurred an hour into City’s 2-1 win at Bramall Lane on Sunday.

Haaland had already missed a penalty against the Blades as City struggled to find a way through.

But the Norwegian hitman finally got off the mark with a well-taken close-range header following a cross from Jack Grealish.

And as he ran off to celebrate, Flanagan jumped from the stands onto the pitch.

Then, in an effort to join the celebrations in City, he jumped atop Haaland’s back.

Despite Flanagan appearing to kiss the forward’s neck, the incident didn’t seem to surprise the forward.

Bernardo Silva, Flanagan’s teammate, appeared noticeably surprised that Flanagan was able to hold onto Haaland for such a long time.

However, security soon rushed to the scene and tackled Flanagan before hauling him away from the field.

And fans quickly took to Twitter to discuss the incredible invasion.

One said: “That fan caught Haaland by surprise!”

Another noted: “We’re lucky Haaland is a unit, if it was Bernardo he’d be paralysed.”

One declared: “That must have been a memorable moment for him.”

Another added: “That fan bet his crib on Haaland to score.”

City ended up having a nervy end to their game when United equalised in the 85th minute through Jayden Bogle.

However, Rodri fired them back ahead moments later to seal all three points.

Haaland took the incident in his stride

Flanagan looked delighted as security rushed in

Haaland bid Flanagan farewell