Parker's options are probably three-fold; go with Higgins, with whom he is close, go with Lonergan, now based in Brisbane as he puts on the world title fight between Jeff Horn, a fellow Duco fighter, and Manny Pacquiao, or go with someone else like Bob Arum in the United States.
In the meantime, WBO heavyweight champion Parker awaits the announcement of his next opponent which is likely to be either Tony Bellew or Hughie Fury, and probably the latter due to the WBO's insistence that the Englishman remains the mandatory challenger to Parker's world title.
The WBO have told Duco that they must enter into negotiations once again with Fury's promoter Frank Warren within the next 30 days for a fight that must be held within the next 120 days.
That deal will need close attention and, with Duco and Parker having publicly stated that they don't see the New Zealander fighting at home again in the short term, and the Duco partners waging a battle between themselves, Warren will likely feel he has an advantage already.
It will come down to money, as it always does in professional boxing. That will be a major factor too in Parker's decision regarding who he wants as a promoter, and in Higgins' and Lonergan's favour is the fact that Parker's contract is something of a rarity in this cut-throat game. He is also considered a loyal individual.
It's understood that Parker is paid a retainer by Duco, and that his living and training expenses are taken care of. He is given win bonuses but gets to keep his purses, rather than share them with his trainers and others like many other fighters have to.
Fury would have been a big pay-day (a $2.4million purse for Parker alone) but for the Englishman's late withdrawal.
Bigger pay-days remain if the detail is done with proper care and attention.
Emotions are likely to be running high, but now is the time for clear heads.