Former Wallaby Toutai Kefu is the Tongan Head Coach, he says Folau would be welcome in his team.
"I'd love that."
"I think he would get a lot of satisfaction out of playing for Tonga," he said.
Folau's parents are Tongan, but Kefu acknowledges World Rugby rules mean he would be unable to play on International stage for three years.
"He could definitely be available for the next World Cup (France 2023)," he said.
"If he does get dismissed by Rugby Australia, he could play in the UK or France, there is plenty of top level competition for him."
The Tongan National Coach admits Folau would need to take a massive pay cut.
"Tongan Rugby Union has no money, we are 100 per cent funded by world rugby."
"We can’t afford to pay our players. So our players they play for pride of jersey, they play to representative their families, they play to go to a World Cup."