"I could've found any excuse in the world not to come back and fight. But you see, I've landed, I'm here and I'm ready to fight.
"I ain't going nowhere.
"I can guarantee you the fight is going ahead.''
Mosley said fans shouldn't blame himself or Mundine for the aborted fight, pointing the finger directly at then-promoter Vlad Warton.
"Whoever constructed the contract and the deal, messed up the deal,'' he said.
"I like (Mundine) as a person, but in the boxing ring we're enemies.
"And I've come here to knock him out.''
Mosley irked many Australian boxing fans when he labelled the local scene "behind the times'' and "almost like the mafia days'' upon his return to the US last month.
The 42-year-old, who was greeted by Nasser at the airport, stood by those comments on Thursday.
"I said that I believed the way the set-up was with the fighting, with the judging, it seemed kind of strange here,'' he said.
"But this is what they're telling me, I'm just regurgitating what's been said to me.''
Asked if he was worried about problems with the judging for the new fight, Mosley said:
"No. I'm not really looking to going to the scorecard, so it doesn't really matter about the judges I guess.''
- AAP