Schafer will select the full squad on Saturday, and importantly he has to decide whether to include Patrick Mboma, who is struggling with injury.
If he chooses to leave Mboma out, it could prove a boost to Job's chances.
"I'm happy to be back in the group which is really a family," Job said.
"I don't feel a stranger and it gives me real motivation to make it to the World Cup."
After a poor spell in the English Premiership with Middlesbrough, Job moved to French side Metz on loan and greatly improved his form, although his team were relegated.
Job added that he hoped that a good show at the World Cup would help get him a new transfer.
"My fate is not tied to Metz," Job stated.
"Hopefully with a good performance in the World Cup, I'll get a new club or at worst return to Middlesbrough - they are still my