Rogue One: A Star Wars Story famously featured Peter Cushing, despite the fact the actor had died in 1994. Disney used a combination of digital effects to change the appearance of actor Guy Henry to appear as Cushing's character, so that it seemed as if Cushing was acting from beyond the grave.

Newsnight reports that Disney could be discussing doing the same thing with Fisher, who returned to the Star Wars franchise in JJ Abrams' 2015 film, The Force Awakens, as General Leia Organa. 

Kirsty Wark said on the BBC show: "With what might be regarded as unseemly haste, Disney is negotiating with the actor's estate over her continued appearance in the franchise. If Disney gets the go-ahead, Carrie Fisher will join Peter Cushing, who, last month, 15 years after his death, played a key role in Rogue One as Grand Moff Tarkin."