Carrie Graf will stay with the Capitals.

Carrie Graf will stay with the Capitals. Photo: Colleen Petch

Canberra Capitals coach Carrie Graf has signed a new three-year deal with the club in a huge coup for the WNBL's most successful franchise.

Graf will end weeks of speculation on Tuesday by confirming her tenure at the Capitals will extend to 15 seasons.

Having guided the Capitals to six of its seven titles in her 12 years there, Graf wants to mastermind the rebuild after Canberra missed the finals for the second straight season.

The process to retain Graf has been a frustrating one, with the uncertainty over whether she would return as Australian Opals coach a sticking point.

Last week, Graf said she would not renominate for the Opals post, and take up a position as University of Canberra's coach-in-residence.

Basketball Australia confirmed the Opals job would be a full-time role for the first time in more than a decade, after Australia won bronze at last year's London Olympics.

Basketball ACT boss Tony Jackson was unavailable for comment on Monday, but told Fairfax Media earlier this week he was ''very confident'' Graf would stay.

Graf will hold a press conference at 11 am on Tuesday to confirm she has re-signed.

''We're very optimistic and very confident [she'll stay], both Graffy and I and her agent,'' Jackson said on February 9.

''It's just fine-tuning some structural stuff, but in principle I think we're pretty close.

''Maybe we won't have everybody's signatures on all the forms, but I think we'll have all the agreements tied up, if not by the last game then the end-of-season dinner [February 22].

Graf has endured a tumultuous past 12 months, and the Capitals feel her lighter schedule will allow her to focus more on returning Canberra as a title contender.

After the Olympics, Graf took personal leave for two matches when her father Richard died after a long battle with cancer.

And the injury woes of marquee player Lauren Jackson, who sat out the entire 2012-13 season, has also been a distraction.