That number is completely made up and dates back to September last year
Brisbane’s big money offer to keep David Fifita out of rivals’ hands Peter Badel, The Courier-Mail 30 minutes ago https://www.couriermail.com.au/sport/nrl/teams/broncos/brisbanes-big-money-offer-to-keep-david-fifita-out-of-rivals-hands/news-story/6f6537ecdfddb11547f5c258f3872101
broncoshq.com
Here is the source, recycling his own stale rumour:
Badel: "
It is believed Meninga has the salary-cap room to offer a four-year deal worth up to $800,000 a season – a $3.2 million bonanza. "