Linus and James Roache appeared in the ITV soap earlier this year as Ken Barlow's long-lost son Lawrence and grandson James respectively. The short plot saw Ken attempt to reunite the pair as Lawrence struggled to come to terms with James's sexuality.
Speaking to Digital Spy, Bill commented: "They did very well and Phil Collinson our producer liked the story.
"The story is not concluded. Why is he still so bigoted against his gay son? So it needs rounding up.
He confirmed that their return would depend on his eldest son's schedule.
"Linus is so busy in New York, so that's the problem," he said. "But hopefully next year he will get another gap, come over and we'll have another session."
Click 'play' on the video below to watch our chat with Bill on the Coronation Street set.
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