The ANZ Stadium in Sydney will reportedly have extra seating installed for the third Test between the British and Irish Lions and Australia.
The encounter will decide the winner of the series, with the Lions and the Wallabies sitting on one Test apiece.
Organisers will push the capacity of the Sydney ground to 84,000 for the match, according to the Daily Mail.
The ANZ Stadium is expected to have around 250,000 visitors in three matches as they plan to host the Lions Test, the third State of Origin match and Manchester United's clash against the All Stars.