The four 'Home Unions' make almost no profit from the five-week tour.
The two teams played out a drawn series in 2017.
Willie John McBride has called the proposal "nonsense"
The 'decider' would take place at Twickenham in June 2021.
The two marquee sporting events will run side-by-side.
Clayton McMillan will take over from Warren Gatland for the year, who will be on British & Irish Lions duties.
The All Blacks hooker will start in the biggest test of his career to date.
The Welshman planned to run away, until a phone call with a family member.
The former All Blacks hooker has only lost two of six tests at the helm.
The All Blacks haven't played England in a rugby test since 2014.
The former Wales captain has not played since leading the 2017 Lions to a drawn series against the All Blacks.
He derided the NZ coverage during the Lions Tour, but said he'd like to coach a Super Rugby franchise.
The former All Black has said he will never take the reins of the Lions again.
The England loose forward has lauded his national coach as a rugby mastermind.
The English lock admits the tourists were fueled by the over-confident attitude of their hosts.
English prop Kyle Sinckler was involved in a "minor incident" after Saturday's third Test.
Chiefs coach Dave Rennie is working to ensure calls like that don't happen again.
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Referee Romain Poite froze over the big call on a late offside play by the Lions.
Their mass exodus has begun.