Kunal Nayyar won't rule out a Big Bang Theory reunion - but believes it's too soon for the show to return.
The British-Indian actor played astrophysicist Raj Koothrappali on the long-running CBS sitcom which also starred Johnny Galecki as Leonard Hofstadter, Jim Parsons as Sheldon Cooper, Kaley Cuoco as Penny and Simon Helberg as Howard Wolowitz.