The veteran playmaker is now immediately eligible for the Qantas Wallabies’ Bledisloe Cup campaign which kicks off at ANZ Stadium against New Zealand on Saturday 18 August.
The 33-Test utility back last played for the Wallabies in the opening Bledisloe Cup Test of 2016 before joining Leicester Tigers in England’s Premiership.
“Leicester have been fantastic to me throughout my time here. The option to return to Australia was something that did exist within my contract, only if a chance to represent the Wallabies was there and, with a Rugby World Cup next year, was ultimately one I couldn’t turn down,” Toomua said.
“As well as a chance to represent my country at a World Cup again, the return home also allows me to be closer to both my wife and family after nearly three years on the opposite side of the world.
“The Rebels are a Club on the rise and I was really impressed after having a few conversations with Dave (Wessels) about his plans for the future.
“I am still very much a Tigers player and, if anything, being able to have this all sorted is more positive than have a decision hanging over my head.
“I absolutely love Leicester, have become close friends with all of my teammates here and want to go out in a successful way,” Toomua.
“It’s a massive boost to the squad and adds to the depth that we’ve built for the broader Wallabies squad in a key position,” Cheika said.
At this stage, Toomua will not be considered for selection in Friday night’s Bledisloe Cup trial at Leichhardt Oval.