In today's Australian, the figure is given as $3.1M.
Given the agreement is confidential, it is obviously speculation but the article said that he would of earned about $5M over his contracted period. Given that their is a legal principle about mitigation, that can reduce payouts based on future earnings it appears to be a healthy payout to Falou.
The article also said that Castle negotiated a lower payout than she was authorised, so it sounds like a leak from RA to save face for Castle to hose down rumours of an $8M payout.
Folau has received his apology, for him and his wife, received an excellent payout and more importantly had a great victory over the politically correct virtue signalling corporate's which hopefully will make them think twice about targeting people they do not agree with.
