According to Digital Spy, Simm was named in the IMDB cast list for the next series of Doctor Who.
However, today the actor dismissed the rumors, writing: "In reply to many, regardless of what it says on imdb, No i'm not returning to Dr Who. Got absolutely no plans to do so #hopethatclearsitup."
Simm made his first appearance as the Master in the 2007 Doctor Who episodes Utopia, The Sound of Drums and Last of the Time Lords. He returned in 2009 for David Tennant's final story, The End of Time.