While we knew Haynes would return for a guest spot at some point in Season 5, the timing of the photos could mean he'll appear early on in the year. Haynes last showed up on "Arrow" for a guest appearance in Season 4.
Check out the photos that have surfaced of Haynes and Kellum on the "Arrow" set -- presumably hanging out in one of their trailers -- below:
Haynes revealed earlier this year that he left the series to focus on his physical and mental health, which declined when tabloids outed him as gay. The "Teen Wolf" star said back in May, "It was a complete shock. I wasn't ready to be back in the headlines...I should have made a comment or a statement, but I just wasn't ready. I didn't feel like I owed anyone anything. I think in due time, everyone has to make those decisions when they're ready, and I wasn't yet. But I felt like I was letting people down by not coming forward with the rest of what I should have said."
"Arrow" returns Wednesday, October 12, at 8pm ET on the CW.