Way back in season one of Game of Thrones, Arya Stark took sword fighting lessons from a super badass named Syrio Forel, played by Miltos Yerolemou, a for real swordsman. According to the BBC, Yeromelou will bring those skills across the galaxy to the new Star Wars film.
While the BBC report does specify that Yeromelou’s role will be minor, we know very little about who he’ll play or what he’ll do in the film. Just because he knows how to sword fight, doesn’t necessarily mean he’ll wield a lightsaber. They may just want him for his acting skills. Maybe he’s playing Chewbacca's daughter.
Along with Gwendoline Christie, this makes the second Game of Thrones actor to join JJ Abrams’ Star Wars spectacular. This can only mean that the new Star Wars will be as good as Game of Thrones. So that’s all figured out now. We can pay attention to other things.