The 17-year-old, who plays religious swimming team captain Ben Richardson, will bow out of the ITV soap when his storyline with screen girlfriend Sophie Webster (Brooke Vincent) reaches its climax at Christmas.
A Corrie source said: "Sophie and Ben's relationship fizzles out at the back end of the year and they eventually go their separate ways.
"And rumours have been rife about a potential lesbian storyline between Sophie and her best mate Sian [Sacha Parkinson], so the decision to split Ben and Sophie up might be to do with that."
They added: "It could be a while before that happens, though - if it ever does."
A Weatherfield spokesperson this morning confirmed to DS: "Lucien will still be on our screens until Christmas when his current storyline ends."
Laviscount joined the Manchester soap in December and made his screen debut on February 2.
A weekend tabloid recently claimed that he quit the show to pursue a career in Hollywood.
> Corrie's Sophie and Sian ponder lesbian plot