The addition of Tom Felton as Julian Albert to season five of The Flash turned out to be a lot of fun. Yes, he was tied into the big bad for the season, but not in a way that was expected and with him joining Team Arrow and becoming involved with Caitlin Snow (Danielle Panabaker) made it seem like he'd be around a while. Okay, maybe not the getting involved with Caitlin as any time she dates someone they end up leaving the show.
Word came out during SDCC that Felton was not only no longer a regular or recurring, but that he wasn't even booked as a guest for the new season. Julian has taken his Indian Jones hat and sarcastic wit and left Central City it seemed. The only question left was, how would that be addressed in the show and was there a chance he'd come back later?
Showrunner Todd Helbing told TVLine:
You'll see pretty quickly — there's a reason why he's no longer with the team. There's always the chance that we can see anybody on this show return. We've had a lot of characters come and go for various reasons, and I don't think this will be any different.
Sounds like it may be addressed in the season premiere on October 10th. It's possible that Julian was moved on to make way for Ralph Dibney (Hartley Sawyer) to join the team.