It's a case of time. If he's new to the house, I'm sure he'll get better as time goes on.

With his food, try splitting it into small portions and have only your hubby feed him for the next few weeks. Set a portion aside to use as treats and only your hubby is to give him treat and train him to obey simple commands in order to earn his treats. He'll learn to start associating him with nice things and his trust will start to increase and obeying the commands will retain his respect for your hubby also.
You can do the commands yourself but don't reward with treats...just a fuss. Treats only come from Hubby for now.