Revealed: Footy boss's explosive email claims troubled star Tarryn Thomas 'was not able to change his behaviour' in warning shot ahead of rumoured AFL return

Tarryn Thomas 'was not able to meaningfully change his behaviour', North Melbourne chief executive Jennifer Watt has reportedly told fellow club bosses in an explosive email about the troubled footy star.

The revelation was made in an email to Eagles counterpart Don Pyke, and included all other club CEOs, as part of Pyke's push for a united stance condemning violence against women.

Thomas was employed by North Melbourne and had undertaken four behaviour modification programs before the club ran out of patience and sacked him in February. 

Clubs are reportedly exploring the possibility of signing Thomas for the 2025 season, conditional on his completion of a behaviour change program.

But in an email sent earlier this month by Watt, she explained the lengths the Kangaroos went in their efforts to change Thomas's behaviour and their ongoing frustrations.  

'(Kangaroos president) Sonja Hood and I have been talking a lot about this, especially in light of the recent challenges we faced with Tarryn Thomas,' Watt said in her message, revealed by News Corp. 

'We were struck by just how hard it was to find programs to support behaviour change. And this was for someone with considerable resources and support around them.

'We eventually found a combination of programs for Tarryn.

'Even though Tarryn ended up completing four different programs which included an extensive combination of education, therapy and participation-style programs, we were not able to meaningfully change his behaviour.'

Thomas was banned for 18 games for conduct unbecoming, after he was alleged to have engaged in multiple acts of misconduct, including the threatening of a woman. 

The 24-year-old is banned from playing footy at any level until July 22. In order for a return to the AFL system he must convince the league that he has changed his behaviour.