In a letter to members on Wednesday, Trigg said the Crows would be more than $3.5million a year better off playing games at a redeveloped Adelaide Oval than they would be staying at AAMI Stadium in its current state.
The figure is based on predicted growth in business as a result of the move to the inner-city venue and also a new agreement with license-holders the SANFL.
Adelaide has been less outspoken on the issue of Adelaide Oval compared with cross-town rivals Port Adelaide, vowing only to correspond with members and the general public when it had reliable and factual information to deliver.
Trigg said the club had now obtained information to categorically endorse a move, if it was to happen.
"Our board has said right from the beginning that we will only endorse a move of AFL games to Adelaide Oval if, as a club, we are significantly better off," Trigg said in the letter.
"We now have enough detail bedded down for us to endorse the project and to conclude that we will indeed be significantly better of as a club."
The South Australian government has committed to funding the $535million redevelopment, if 75 per cent of the 19,500 SACA members vote in favour of the proposal in their referendum next month.
The latest design plans are for an "outstanding" 50,000-plus-seat stadium, which Trigg said would accommodate all members, who held a ticket with the club in the year prior to the move.
Other boxes to be ticked off in recent discussions include:
* 75 per cent of seating undercover compared to 45 per cent at AAMI Stadium
* "Sensible" and "affordable" membership options ranging from 'club only' to full stadium membership
* Nearly seven months exclusive access for football at the venue
* Appropriate access for training and access to purpose-designed change rooms
* Enough car parking to accommodate pre-game barbeques and tailgate parties
* Commitment to the ongoing issue of reducing congestion around Adelaide Oval
* Access to a space immediately adjacent to the ground, which will be fit out as a smaller version of the current 'Shed' at the Westpac Centre
Trigg said the club intended to keep its administration and training base at West Lakes and would retain control of the Westpac Centre to use as a multipurpose training facility and community and entertainment venue.
The Crows would remain at AAMI rent-free, with the SANFL committed to funding maintenance of the stadium.
Recently, a 25-year plan to transform AAMI Stadium into a residential development was unveiled.
Trigg acknowledged the plans, but said he expected AAMI Stadium to remain in use for "many years to come" and that the club continued to support having two major stadiums in Adelaide.
"We have a very clear understanding that this issue (AAMI v Adelaide Oval) has been divisive with out supporters," Trigg said.
"We have said two things right from day one. One is our need to be significantly better off. Second, is that to stay at AAMI - and do nothing to AAMI - is not an alternative.
"Members are reminded too that there is no government funding for AAMI, and football cannot generate enough capital to redevelop AAMI in its own right.
"This has been why we have worked so hard to get a positive outcome for all stakeholders, if the redevelopment goes ahead.
"Our board is convinced that moving games to Adelaide Oval provides the best opportunity for you to be part of a sustainably successful football club."
