Roar's season came to a close on Tuesday night with a 2-1 loss to Urawa Red Diamonds on the Gold Coast, which put paid to its faint hopes of progression to the AFC Champions League's round-of-16.
With its A-League finals campaign also over, the stage is set for Tribulietx - who has coached Auckland City to five consecutive Oceania Champions League titles and guided the Kiwi minnow to third place at last year's FIFA Club World Cup - to take over from interim coach Frans Thijssen as expected.
Barcelona-born tactician Tribulietx arrived in Brisbane on Monday to complete negotiations with the club, although he was not sighted at cBus Super Stadium on Tuesday.
Players maintain they are in the dark regarding Roar's plans, but the man with the most to lose is Andrija Kaluderovic.
The Serbia marksman scored Brisbane's only goal against Urawa, taking his tally to seven goals in 16 appearances across all competitions since his January arrival.
That should be enough to secure his future at the club, but Kaluderovic - who is out of contract on 31 May - has yet to speak with Brisbane about an extension.
Any conversation is unlikely to begin until a new coach is appointed.
"I want to stay here, I like this team, these people - I have a very good connection with everyone in the club," Kaluderovic said.
Complicating things for Kaluderovic is that Roar's four other visa player slots next season are already filled with Thomas Broich, Jean Carlos Solorzano, Jerome Polenz and Henrique.
Tribulietx may wish to bring in an import of his own choosing at Kaluderovic's expense, although a vacancy could come up should Henrique's drawn-out application for Australian citizenship finally be approved.
Meanwhile, Thijssen's future remains equally unclear.
He maintains that he has never been interested in becoming Brisbane's technical director, despite multiple club officials saying he would next season.
"I don't know who came (up) with that story," Thijssen said.
"I'm clear, I came here until the end of the season and that's what I'm doing.
"I'll sit with the club around the table to talk about what I want, because nobody asked what I want and what the club wants.
"I'll speak with the club about how I feel about it and the club will talk with me about how they feel about it."
Asked directly if he was interested in staying on as head coach, Thijssen said:
"What I have to say, I'll say that to the club - not to the press. You'll understand that I hope."
