
The good news is that the dog's sire comes up as clear for the DNA tests on the
KC website. However there are no test results for the dam, so your friend will need to get his dog DNA tested for these conditions, as well as tested for the conditions listed on the
SBT club website.
It would also be sensible to join one of the breed clubs and have experienced, unbiased (we all think our dogs are perfect! ;-) ) SBT people assess him to make sure that he's a good enough example of the breed to consider allowing him to be used at stud.
Your friend will need to remember that he will have as much responsibility, throughout their lives, for any pups sired by his dog as the owner of the bitch; pups have two parents and both parents' owners have a lifelong duty of care towards any offspring. Remember that staffies are the most over-produced breed in the country at the moment, with about 40% of dogs in rescue kennels being staffies or staffy crosses.