Remember the squabbling which prevented Floyd Mayweather Jr and Manny Pacquiao from coming to terms five years ago?

With both fighters striking an agreement with USADA (United States Anti-Doping Agency) for blood and urine testing leading up to the fight, you may have assumed the issue a thing of the past. After all, Mayweather and Pacquiao began a press tour last week for their May 2 bout in Las Vegas last week, and all seemed well.

But, it appears, that assumption would be wrong — as Dan Rafael of ESPN reported yesterday that the two now have issues with a proposed penalty for failing a test.

Pacquiao adviser Michael Koncz says that his camp has proposed a $5 million penalty for any failed test, and the Mayweather camp has refused.

“Today we were informed that Mayweather turned down the request,” Koncz said, as reported by Rafael. “Manny had requested that there would be a reciprocal fine of $5 million for a failed drug test.”

Mayweather’s representative Leonard Ellerbe describes the matter “a lame-ass attempt to generate publicity,” claiming all terms had already been upon.

Both fighters have used independent agencies to conduct random blood and urine testing in recent years — in Mayweather’s case, since 2010. Both have already had USADA representatives visit and take samples.

The practice of randomly testing fighters in the months leading up to a bout is imperative to keep fighters from simply “cycling off” performance enhancing agents. In the last year, the UFC has also began conducting random testing, and seen its fighters fail at a rate of about 30%.