Puppy

Hi I purchased two puppies, I am a breeder. I have however never seen this before. I have a male puppy, you can see two testicles however he has NO scrotal sack area.... the skin is tight but the testicles have descended from inside him..or are trying to but they have no where to go. Will this dog end up having descended testicles? Or will they end up retaining? i also own his sibling brother and his testicles have a sack area where the skin is stretchy.... I’m so confused on this... the male with the no sack area has better structure/phenomenal type and much better socialbility so I would prefer to keep this male as a future stud dog once all health testing is completed.