George Groves believes a potential title unification clash against James DeGale next year would be as big as his fight with Carl Froch at Wembley.
Groves, who was knocked out by Froch in their rematch a year ago, had been due to fight Anthony Dirrell until the American lost the WBC version of the world title to Badou Jack last month.
As mandatory challenger for the WBC belt, Groves is now waiting for a fight with Sweden-born Las Vegas-based Jack to be arranged before, he hopes, a showdown next summer with DeGale, who faces Andre Dirrell - brother of Anthony - for the IBF world super-middleweight title in Boston on Saturday.
"I would fight James again, no problem at all, and I think it is inevitable we will meet again when the time is right," Groves told ESPN.
"I'm fighting for the WBC title later this year so it could be a world title unification fight when it happens. It will be as big as my fight with Carl Froch at Wembley.
"When I fought James first time around we were both 10-fight novices and it was still a big fight. Next time it will be massive."
DeGale (20-1, 14 KOs) lost a close points decision to Groves (21-2, 16 KOs) four years ago and the pair, who used to be team-mates at the same west London amateur boxing club, are still bitter rivals.
But Groves is still tipping 2008 Olympic gold medallist DeGale to beat Dirrell, who held Froch to a split points decision in 2009.
"James can do the business out there against Dirrell," Groves told ESPN.
"He has a lot of momentum behind him a the moment but he's got it all to do out there. He's fighting the better Dirrell brother in my opinion who has boxed at the higher level against better opponents.
"It's whoever holds their composure, the best will go on to win the fight. Whoever starts well could dictate and decide the outcome. If one of them can get in their groove it could prove the difference. He's [DeGale] got a great chance and he will be up for it."