Yes you are right that mate donaire's wife is a good businesswowan and for sure they can handle it with care. And if donaire will retire in the world of boxing then nonito can make his own promotion that he can trained many young amature boxer that have a dream to became one of the greatest boxer in the world. because as we can see in the Philippines there are many young man that have a good dream to fight in the ring.
He can train and he can influence the future of those young amateurs by using his former fame as one of the Champ in this sport, and with the way his wife handles his career, she can follow that pattern and build a new champ.
In training future champions, it is not the fame that helps but the experience accumulated by the trainor. Donaire can advise boxers or even teach methods on foot works, forms, counters, training etc. Fame cannot teach a boxer how to box but experience do.
I guess that would be his goal one he hangs up his gloves and might be the reason why he's still fighting in the height of his 40s, well, apart from the fact that he can still fight impressively and might be next undisputed champion in bantamweight if he's lucky to unify the belts as fast as he can. As far as I know, Donaire already owned a gym in the Philippines with an aim to train aspiring boxers to be the future champions especially if they already got natural talents,, and then he also owned a gym located somewhere in California.
It is possible for him to unify the belts in this division. If he will continue winning, he can challenge the other belt holder and unify everything at his age. He still got that winning capability.
We are waiting for his upcoming fight and see if he will reclaim the belt and will try to negotiate while
he still has that power to continue winning, else, maybe we will see him retiring.