"For Jacob, it's a real opportunity," said Potter. "He's secured a two-and-a-half year contract there with Hull.
"You couldn't hold a guy back who has a potential opportunity to make better for himself.
"I think he'll do really well."
Miller started the year at halfback for Wests Tigers but youngster Curtis Sironen forced his way into the halves on his return from injury.
Potter has a number of options to select from in the halves, with former NSW five-eighth Braith Anasta to return from injury and youngster Luke Brooks continuing to develop.
"At the moment, the plan is to have the halves between Curtis Sironen and Benji Marshall," said Potter.
"We've got Braith Anasta and Liam Fulton.
"We've also got young Luke Brooks to come into the mix later in the year."