Brennan Johnson inadvertently broke one of Aussie sport's most controversial unwritten rules ahead of Spurs vs Newcastle friendly

Brennan Johnson appears to have inadvertently broken an unwritten Aussie sport rule prior to Spurs' controversial friendly with Newcastle.

After both claimed victories in their respective final games of the season, the two Premier League clubs immediately jetted off to Melbourne for a post-season friendly.

The game at the Melbourne Cricket Ground finished 1-1, with Alexander Isak and James Maddison on the scoresheet.

England were dealt a major blow as Kieran Trippier was forced off with injury.

A penalty shoot-out ensued and Newcastle won 5-4.

The two sides have been in Melbourne for 'Global Football Week', an event that will also see Newcastle lock horns against A-League stars and Arsenal women take on the A League all stars women.

An open training session for Spurs stars took place at AAMI Park on Tuesday night, with 7,500 fans getting closer than ever to hometown returnee Ange Postecoglou and his squad.

However, there was a bit of controversy as an unwritten rule was violated.

Wales international Johnson handled an AFL football - which is designed by Sherrin.

In a video shared on social media, the red ball was hurled at him from a fan in the crowd.

He had initially shouted, "Ange, this is for you!".

After his catch attempt went wrong, Johnson dropped the ball before running to retrieve it and chucking it back into the stands.

Spurs goalkeeper Guglielmo Vicario also had a yellow Sherrin in his possession at Collingwood's training centre, but as per the Daily Mail, there is something of a ban on clubs from abroad touching the ball.

Football Australia, the governing body of soccer, futsal, and beach soccer, are responsible for the clamping down in recent times.

The likes of Cristiano Ronaldo and Marcus Rashford have held a Sherrin during trips to Australia but after the uproar in relation to the PR cross-coding, it is no longer seen as a traditional practice.