By Joel Leaver Celebrity Gogglebox has reportedly signed up a Strictly Come Dancing finalist and his family for its next series. It has been reported that former finalist Bobby Brazier, 20, will appear on the celebrity version of Gogglebox alongside his father Jeff Brazier, 44, and brother Freddie Brazier, 19. Producers are said to be “delighted” by the apparent casting of the siblings and presenter Jeff for the Channel 4 show. Jeff and his eldest son Bobby previously appeared together on a “special edition” of Gogglebox in aid of Stand Up to Cancer that aired in November. The former shared at…