HBO are busy in pre-production on their TV adaptation of the Harry Potter series and reports are emerging of further major cast additions. 

A major Netflix star is reportedly 'in talks' to take over from the late Maggie Smith as Professor McGonagall in HBO's new Harry Potter series.

British actor Paapa Essiedu, 34, has reportedly been 'offered to play Severus Snape' in the reboot, sources recently informed The Hollywood Reporter on Wednesday.

Janet McTeer is reportedly in talks to replace the late Dame Maggie Smith as Professor McGonagall in a new Harry Potter series that will be coming to streaming giant HBO