New Zealand Prime Minster Jacinda Ardern is expected to announce at 4pm on Tuesday a potential date for the opening of a travel bubble with Australia.
Currently, there is only quarantine-free travel from New Zealand to Australia and not the other way round.
The five-week Super Rugby trans-Tasman competition is scheduled to kick off on May 14 in Dunedin when the Highlanders host Queensland, with the five teams from each country squaring off each week.
Round three is set to feature a Super Round with all matches being played at one venue, while the final between the two top-placed teams on the combined competition table is planned for Saturday, June 19.
Toomua, who is the players' union president and Rebels stand-in skipper, wants the competition to go ahead for the good of rugby.
Wallabies coach Dave Rennie has also made it clear he is keen to see how the improved Australian sides measure up against the best from Super Rugby Aotearoa.
Despite spending three months on the road last year to get Super Rugby AU up and running, Toomua felt Melbourne players would be open to more time away if organisers decided to split the competition into hubs.
“We need that competition to go ahead,” Toomua told AAP.
“This year it's a different proposition. Last year it was more the unknown such as how long it was going to be (away from home), but this year we will know an end point.
“I don't think it's quite the commitment that last year was, so I can't see there being too many issues.
“It's my personal view we should be doing everything we can to make that go ahead and if that includes us being on the road for a little while than that's something we will do."
Toomua said there was an appetite amongst fans for the trans-Tasman games, while it was important for the development of players in Australia to match themselves against the Kiwis.
“I think fans will be keen to see us line up against some different people and test ourselves against traditionally the best country in the world,” he said.
If the countries can't come to an agreement Super Rugby AU is set to be extended into a third round before finals to meet broadcaster commitments.
“That's very much option B I think,” the test playmaker said.
“They're very much looking for ways to get this trans-Tasman up and away whether it be hubs or whatever.
“I think that third round of Super Rugby AU is very much the last option from what I'm hearing.”