What would a young Sheldon Cooper be like?

Jim Parsons as Dr Sheldon Cooper in Big Bang Theory.

The Big Bang Theory spinoff is making movement, setting its core cast, including the young star who will play the childhood version of Sheldon has been cast.

Iain Armitage is being eyed for the coveted lead role in the hot comedy, simply titled Sheldon, to star as the young version of Sheldon Cooper – the role made famous on The Big Bang Theory by Jim Parsons, who will serve as an executive producer on the spinoff.