This is a non issue
For whatever reason, a full week later, some of those same members of the media, who were in attendance for Arum's explanation, ran a story based on misinformation supplied by Pacquiao's advisor, Michael Koncz, suggesting that it was only Team Mayweather that didn't want to accept their proposal. Arum's comments, however, make it clear that he too was on the same page as Team Mayweather and disagreed with the idea of the $5 million penalty.
According to Arum, both Michael Koncz and Manny Pacquiao were made aware of his own opinion that a $5 million penalty was insignificant considering the amount of money they could collect if Mayweather did indeed fail a drug test. Having said that, it's unclear as to exactly why Michael Koncz (and more importantly, select members of the media) is now bringing up the penalty as though it was an issue.