"To be clear, what we are trying to do with Ridley now is go through the painstaking process of trying to break the back of the story, figure out the direction we're going to take the movie and find a writer to work on it.
"The casting of the movie could not be further from our minds at this moment."
Last August Kosove said the sequel would be a "total reinvention" that would do "everything fresh".
In Blade Runner, Ford played a retired police officer who was cajoled into one last job to hunt down and destroy a group of "replica" robot humans.
It fared poorly at the box office but has gone on to become a cult favourite.
A digitally remastered Final Cut of the film was released in 2007.
- Herald online