Stand-off Russell, who is currently contracted to Racing 92 in France, is one of the most desirable players in the world, his reputation enhanced by recent strong performances for the British and Irish Lions on the tour of South Africa.
The 28-year-old is settled in Paris, where he moved to in 2018 after six years with Glasgow Warriors, but now the Green Rockets are preparing a package that would make him one of the best-paid players in the game.
Japanese rugby is going through a rebranding and will be known as Japan Rugby League One for the 2022 campaign.
Ex-Australia coach Michael Cheika has been appointed by the Green Rockets as their new director of rugby, who are based in the city of Abiko and coached by Ryota Asano, and The Rugby Paper reports that Russell’s signature is at the top of Cheika’s wishlist.
They also claim that the contract proposed for Russell would see him earn more money than South Africa’s Handre Pollard and New Zealand Charles Piutau, who are two of the sport’s best rewarded stars.
Russell, who has been capped 55 times for Scotland, is approaching his peak years and should a deal with Racing 92 and a concrete contract offer come to fruition, the Bridge of Allan-born flyhalf would need to decide whether he wants to play in Europe or move to Asia at such a crucial point of his career.