Upvote:8
He can apply, having a job is not a requirement.
But he is not in a good position to get a visa. Several points, not all will weigh as strongly, but there might be more still.
- He is a single male, who has left his home country for a lenghty stay abroad;
- This amplifies that he may have no or few ties back home to return to;
- He is coming from a country with a tradition of visa abuse, thus making it harder for the genuine people to get visa;
- He is not leading an independent life... he does not have the resources to sponsor himself. This heightens his risk profile.
I do not say that he is/will do any of these things, it is what the people granting visa will see and fear.