Manny Pacquiao's promoter Bob Arum has given Floyd Mayweather Jnr's camp a Monday deadline to resolve a blood-testing row which has threatened to derail the proposed super fight between the two welterweights.
Top Rank promoter Arum confirmed to Sports Illustrated that Pacquiao will submit to unlimited urine tests while agreeing to blood tests in January and as many as two more, no later than 30 days before the fight.
Arum is also proposing a hearing be held on January 19 in front of the Nevada Athletic Commission to determine whether additional blood tests are necessary.
"This is unprecedented," Arum told the U.S. based sport magazine. "Our expert says blood tests are ridiculous. But we will let the commission decide. They are the governing body."
If Mayweather refuses, Arum revealed he will make a deal for Pacquiao to face former junior welterweight champion Paulie Malignaggi in Las Vegas.
"That deal will take about an hour [to make]," Arum added.
The welterweight clash was due to take place in Las Vegas in March but the pair have become embroiled in a dispute over Mayweather's controversial request that Filipino Pacquiao has Olympic style blood-screening 30 days prior to the fight.
Pacquiao has since said he will file a defamation lawsuit against American Mayweather -- whose promoters Golden Boy Promotions went public with their demands for testing as laid down by the United States Anti-Doping Agency (USADA) -- for accusing him of taking performance-enhancing drugs.
Pacquiao, 31, became a five-weight world champion following his WBO welterweight title win over Miguel Cotto in November, while Mayweather returned from a 21-month retirement to beat Mexican Juan Manuel Marquez in September.