RingTV.com reports that Nonito Donaire's hand injury from Saturday night's win over Wilfredo Vazquez Jr is healing up, and that the fighter should be ready to go again by May or June, a pretty standard layoff.
From manager Cameron Dunkin:
"Nonito's hand's good. There are no breaks. He cut a vein, and what happened is that the vein was rubbing against the wrap inside of his gloves, and the vein swelled up into a blood blister and it popped. And that's why the vein swelled up and it popped. According to his doctor, that caused a lot of pain."
Donaire's next fight will be against Jorge Arce, barring an upset loss by Arce when he rematches Lorenzo Parra on February 18. The Donaire vs Arce fight has been in the works for months now, dating back to October, even prior to Donaire's final fight at 118 pounds, a win over Omar Narvaez.
It is perhaps possible that Donaire vs Arce would be a good fit for the Pacquiao vs Bradley undercard on June 9, but there have been no public mentions of that even as an idea. Top Rank has plenty of PPV undercard options, and if HBO has strong interest in a Donaire vs Arce fight by itself, it wouldn't make sense to put it on the PPV undercard, since it won't have any legitimate impact on the amount of buys or anything like that, and Top Rank and the fighters would get a lot more money having their own show.