ITV bosses are said to have told its soap actors not to join the BBC show, but that they can sign up for similar ITV talent shows such as Dancing on Ice.
"It's a no-brainer for us. Why would we allow cast members time off to go to film a show for a rival channel?" a source told The Sun.
Michelle Keegan has been linked with a spot on the Strictly dancefloor - reports later denied by her agent - but the insider added that the deal fell through.
"The BBC's offer never got off the ground - we wouldn't release her from her contract," the source claimed. "That goes for everyone else in the cast - but we are more open when it comes to ITV shows."
Anthony Cotton was the first Coronation Street star to be given time off for a reality series when he starred in I'm a Celebrity... Get Me Out of Here, and his co-star Ryan Thomas was recently linked with the show's forthcoming new series.
Chris Evans, Fern Britton, Ronnie O'Sullivan and Michael Vaughn are among the stars rumoured to be part of this year's Strictly Come Dancing.
Dannii Minogue recently denied a report stating that she was close to signing a deal for the BBC One series.