FIFA ethics chief tells World Cup bidders to play fair

Aside from knowing Japan has no chance of getting it, it's a pretty tough call. I'm tempted to say Australia, as their team has improved immensely of late and it's never been to that continent, but for the same reasons the US also has a fair shot (minus economic problems). If it stays in Europe I would bet on Netherlands-Belgium.

does that mean no bribing allowed ?

Probably means, 'Don't get caught!"