Thomson was unveiled on Thursday as the Brumbies' chief executive, ending a six-month search and giving the organisation a clean slate after a year of off-field trouble.

Thomson, a former Brumbies general manager, Nike marketing director in China, Australian Sports Commission executive and ARU employee, will begin his tenure on January 24.

One of his first jobs will be putting together the process to find a new coach as Larkham enters the final year of his deal before linking with the Wallabies on a full-time basis.

Thomson also declared he wants the Brumbies to re-engage with Canberra and ensure the club has long-term sustainability with the future make up of Super Rugby still unclear.

Thomson flagged the prospect of Larkham and the ARU playing a role in the selection of the next coach, with current assistant Dan McKellar and former coach Laurie Fisher names already being mentioned.

"I think Stephen [Larkham] has done a great job and to be going on to be a Wallabies assistant full-time is a real feather in the cap of [the Brumbies] as much as anything," Thomson said.

"That's part of the pathway we want to provide for players, administrators and coaches.

"We'll obviously have to turn our minds to [Larkham's replacement] reasonably quickly and I'm sure there won't be a shortage of good applicants willing to put their hand up.

"We'll go through a process and make sure we have appropriate people involved in that process, be that former players, Stephen we'd like to have heavily involved and the ARU."

Thomson returns to the Brumbies after being the club's general manager until leaving at the end of the 2011 campaign.

He returns after one of the most turbulent years in Brumbies history, after former chief executive Michael Jones and the board were locked in a legal battle.

Canberra rugby relationships have been mended over the past six months and Brumbies chairman Robert Kennedy said Thomson was the perfect man to lead the organisation forward.

"I think his style will fit very well with the Brumbies and Brumbies culture. This is a pivotal moment in Brumbies rugby as this puts together another plank in our platform," Kennedy said.

Thomson said he avoided the drama that engulfed the Brumbies earlier this year, where the board stood Jones down only for that decision to be challenged in the ACT Supreme Court.

The angst between the Brumbies and stakeholders stemmed from a KPMG report into the club's move from Griffith to the University of Canberra.

"I've been pretty busy with my job at the sports commission, so I've watched from afar, I've got to a few games, but I really haven't focussed on what's been happening in the organisation in the last year," Thomson said.

The Brumbies will report a financial deficit next month and there have been rumours the Brumbies face an uncertain period as Super Rugby officials contemplating axing teams and changing the format.

Thomson said the Brumbies must work with the ARU to remain viable but is confident of financial sustainability.

Interim chief executive Phil Thomson will continue in the position for the coming weeks before Michael Thomson begins next year.

Michael Thomson and Kennedy praised Phil Thomson for easing tension in Canberra after stepping in temporarily to give the Brumbies leadership.

"We've got really good solid foundation and Phil Thomson has done a great job in stabilising the Brumbies. We know where the Brumbies can get to and I'm looking forward to being a part of it," Michael Thomson said.

"Canberra is a really unique community and they like to see Canberra teams do well. Part of the way we're going to reconnect is to be out and about and re-engage with the community."