Ferdinand has been called up into the England squad for the first time since 2011, and Ferguson confirmed that the 34-year-old would be available for this month's WorldCup qualifiers against San Marino and Montenegro despite earlier expressing fears about his fitness.
But Davies fears if Wales are still struggling to score tries by the time the WorldCup in New Zealand kicks off next October, their time Down Under will be short-lived.
There are fears that prostitution, which is illegal in South Africa, will thrive during the WorldCup, with prostitutes flocking to the country from elsewhere in the world.