For reasons unknown.
THR reveals that the character Daario Naharis has been recast, with Michiel Huisman to replace Ed Skrein.
Darrio is first introduced in season 3 as a warrior who turned against his people to join up with Danny. The tension between the two are so thick, it puts The Doctor and Rose to shame.
It’s unknown why Game of Thrones recast Darrio, but it’s not the first time the show does this. It’s also reported that Dean-Charles Chapman, who previously played Martyn Lannister on the show, will now be playing Joffrey’s little brother, Tommen, taking over for Callum Wharry. If you’ve been reading the book, you can probably guess why.