Ireland are set to take part in an eight-team tournament at the end of the year which will feature the other members of the Six Nations plus Japan and Fiji.
It follows last week's World Rugby proposal for a temporary calendar which would see the remaining fixtures of the postponed 2020 Six Nations played out in the final two weeks of October, before Northern Hemisphere teams would begin an international window from the weekend of 14 November to 5 December against invited international teams in a tournament format.
That eight-team tournament,which will be confirmed in August, will fill the space in the calendar normally reserved for the Autumn internationals, with the competition split into two pools of four.
Ireland are set to be in a pool with England, Wales and Fiji, while the other pool will feature France, Scotland, Italy and 2019 Rugby World Cup hosts Japan.
Matches, which would be played out on four consecutive weekends, will be screened by RTÉ Sport.
Ireland's outstanding Six Nations fixtures against Italy and France are expected to be played on the weekends of 24 and 31 October respectively.