Cumberbatch, 37, has long been linked to a role in 'Star Wars: Episode Vii', which would reunite him with his 'Star Trek Into Darkness' director JJ Abrams but the 'Sherlock' star claims the project is no longer on his radar, reported Contactmusic.
"I would've liked a part in JJ's new Star Wars but it won't happen, sadly," he said.
Cumberbatch has however not elaborated on the reasons for the failed deal.
Details about the new cast have been kept tightly under wraps, although actress Maisie Richardson-Sellers is among the frontrunners for a leading role, alongside Breaking Bad's Jesse Plemons and other newcomers John Boyega, Ed Speleers and Matthew James Thomas.