The actor revealed the news during an interview with the Ghostbusters podcast Cross The Streams. Here is what he had to say.
"In the meantime there's a spin-off of Arrow called The Flash, I'm meeting the creators next week. So, I have to prepare for that."
He also commented on who he would be playing in the upcoming superhero spinoff.
"His adoptive dad,...or the dad of. His (Barry Allen) dad has a problem"
Based on the debut of Barry Allen in The CW's Arrow, we know that his father was imprisoned for the murder of his mother. That, in addition to the actors statements, would make it safe to say the he will be taking on the role of Detective West. If you aren't familiar with the character, here is a brief description of him.
Detective West is an honest, blue-collar cop who's seen it all. A soulful, funny caring father to Iris, and a surrogate father to Barry, West came up through the foster system himself. He took in Barry after his mother's murder and his father's imprisonment. He believes in Barry and supports Barry's efforts to prove his father's innocence.