"We're having a conversation now [with the council] and saying that if we are going to invest 600m into the Allianz - and that's going to bring X amount of revenue, we have got the study to show how much economic value it contributes to the borough - you are going to have to work with us in terms of an increase in the number of events we can stage in order to monetise the stadium.

"There are plenty of places that would like to have us there. Birmingham and Milton Keynes would love to have us there."

Asked if the RFU could move if the council were not willing to increase the number of non-sporting events from three, he added: "It would be a tough call for us. It would be very difficult.

"I don't know how we would justify the investment in the stadium if we can't get the increase in the event licences."

BBC Sport has approached Richmond Council and the RFU for comment.

In February 2024 it was reported the RFU had considered selling Twickenham and buying a 50% share in Wembley, according to a document seen by the BBC.

The Twickenham Stadium Masterplan Programme (TSMP) revealed the RFU board discussed the proposal but no formal approach was made to the Football Association (FA).

Instead, it chose to focus on redeveloping Twickenham, which has been England's home ground since 1909.

Twickenham was renamed as Allianz Stadium last year as part of a new sponsorship agreement.