well if i was being accused of a crime like that i would happily sacrifice my driveway to prove my innocence.
he does not really need the permission of the police he just needs murrets permission.
The problem that I have with this is at the very beginning,,this wouldn't have taken place when police were swarming all over the area,,and a sniffer dog would have immediately found the child. Murat knew that too,,but although her body was pretty well disposed of soon after she was taken,,and Murat re-surfaced the driveway soon after so that dogs wouldn't dig up the remains,,,it still wouldn't have deterred a cadaver dog from finding a corpse underneath concrete.
I'm almost certain that sniffer dogs were taken to Murats house,,though I can't swear to it.
However,,if this guy Stephen wants to go ahead with his experiment/theory,,then there's no harm done,,and if Murat's in agreeance with it,,then that's fine also.
The time to worry is if and when Murat objects.