Exeter manager Rob Baxter says plans for a new Club World Championship must be viable for the teams taking part.
Plans are being considered for eight European teams to play six Super Rugby teams and two Japanese Rugby League 1 teams in June 2028.
These developments come at a time when English clubs are trying to recover from a difficult financial situation due in part to the impact of the coronavirus pandemic.
Reports say the format of the Champions Cup could be changed to make room on the calendar for new events.
“If someone says that after four years the finances are in place to cover everyone's travel costs, there is a TV deal and all the clubs involved get millions of pounds, that means all the clubs If I were to say it would help keep the game afloat, I would say it would help the business thrive, which is exactly what the game needs,” Exeter's director of rugby Baxter said.
“Oftentimes, if I were to say, 'Let's try it, let's see if it works, see if I can generate interest,' I would be very hesitant about it, because… Because it's very easy to create something big, and as we've seen time and time again, problems in the game are trying to solve problems.”
Baxter led the team to the 2020 Champions Cup title and reached the last eight in three of the following four campaigns. They travel to France on Sunday to face Toulouse in this year's quarter-finals.
But he said things like travel needed to be sorted out to everyone's satisfaction before the competition started, and that he would prefer to go to places like New Zealand rather than South Africa, which clubs are currently required to do in the Champions Cup. He said travel is a much tougher prospect for players.
“We're in a European competition right now, and it's literally overnight until we find out the result in France on Sunday and try to find a plane and get over. And we're trying to get as little plane as we can. We're spending. Our costs are: 'It's going to be tens of thousands of pounds, tens of thousands of pounds,'” Mr Baxter said.
“It's just now, and it's within the scope of European competition. It's about taking that reality and making it a global competition and saying, 'Yes, we're going to look at this, and this is The funds are in place and this is what could happen' – we may all want to do it, but we actually have to be able to afford to do it .
“There's nothing negative about an entertaining game of rugby and that's what everyone wants.
“But at the same time, we have to make sure that not just the players and coaches, but everyone else wants to see it, and everyone else wants to be a part of it.”