Exact details of the character are vague but the part is believed to be a Jedi apprentice.
Variety reports on actors who may (or may not) be in the running for the lead in the new Star Wars movie. I like that the part is “believed to be a Jedi apprentice;” I completely imagine someone at Lucasfilm just making shit up and going “Fuck it, they’re a Jedi apprentice, that sounds believable, right? Who isn’t a Jedi apprentice in these movies?”