"Speaking on Radio 4, Jacobi said: ‘My ears pricked up when it said that Disney was buying Star Wars. 'Oh, come in Sir Alec Guinness! Yes, on to the agent immediately.’ Jacobi, who starred in the 1976 BBC drama I, Claudius, added: ‘I’d love to do my big franchise movie. Ian’s got his Gandalf, Pat Stewart has his Star Trek, Michael Gambon has got his Dumbledore. 'They are running out of these old men, you see. I have to be the next.’"
It's interesting to see another thespian want to follow in the footsteps of the legendary Sir Alec Guinness, but the report goes on to quote Derek on his motivation to be in the sequel trilogy.
"He suggested he is motivated by financial concerns..."
To me this is just wrong, wanting to be in the film because you are banking on it setting you up for life? Maybe they can put a mask on him if he does make it, and then replace his voice with another. I'd be ok with that scenario.