The New Zealand Rugby Union is close to finalising three extra revenue generating games for the All Blacks next year, following the successful Bledisloe Cup experiment in Hong Kong.

The All Blacks and Wallabies are expected to meet in Denver, the United States.

Mile High Stadium, the home for the Denver Broncos American Football team, has a capacity of 76,000, far outstripping the 40,000-seat Hong Kong Stadium.

A Test against Wales at Cardiff - tacked on to the All Blacks' traditional end-of-year tour - is also a strong possibility.

That precedent was set on the current tour when a money-spinning match against England at Twickenham was added to a schedule featuring Scotland, Ireland and Wales.

The NZRU will make about $A1.7 million from the England match which also provides All Blacks with an opportunity to complete a third Grand Slam, presuming they beat Wales in Cardiff this weekend.

The offshore Bledisloe Cup match on November boosted the NZRU's coffers by about $A3.4 million.

AAP