One encouraging element that emerged from the Manny Pacquiao-Floyd Mayweather Jr. fallout was that the super showdown could still take place in the fall.

Richard Schaefer, Mayeather’s promoter, isn’t so sure. Schaefer said Monday that he wouldn’t bet the fight will take place any time soon because of the issue that scuttled the agreement — blood testing — and ongoing enmity between the camps.

Mayweather and Pacquiao couldn’t agree on a cut-off date for blood testing, Mayweather demanding 14 days before the fight but Pacquiao drawing the line at 24 days.

Schaefer doesn’t see either side budging in subsequent negotiations.

“(Pacquiao’s promoter Bob) Arum made it very clear,” he said. “He said there’d be no conversations unless Mayweather would agree to drop these drug-testing demands. Based on what I understand, that’s not going to happen.”

Schaefer added that other comments by Arum don’t help.

“He’s saying things like if Don King were Mayweather’s promoter, this would never have happened,” he said. “He said King would’ve hit him over the head and made him do it. Maybe that’s how things worked 40 years ago; it doesn’t work like that any more.

“I have a different style. I don’t believe in hitting people over the head.”

So is there any hope ?

“You never know,” Schaefer said, “but I’m not even thinking about what might happen in the fall.”

Schaefer’s spirits were lifted when he talked about the Shane Mosley-Andre Berto fight on Jan. 30 in Las Vegas.

“That’s a very intriguing matchup,” he said. “The winner of that fight will certainly be in prime position to fight either Mayweather later on this year or Pacquiao.”

Mosley (if he wins) vs. Pacquiao? That would mean that Schaefer — Mosley’s promoter — and Arum would have to negotiate another fight, which in that case wouldn’t be a problem.

Mosley, his career clock ticking, would do whatever is necessary to make the fight happen.