Either Stephen Amell is spending his spare time feeling nostalgic by binging through old Arrow episodes, or he’s dropping a major clue that Colton Haynes might be returning to the show.
Additionally, Oliver recently mentioned the character in “Thanksgiving,” which is always a good sign someone’s making a comeback.
This isn’t the first time something like this has been teased, as well before Amell took to Facebook Haynes himself teased on Twitter that Roy Harper would be returning to the Arrow-verse very soon.
Take all of that, and the fact that Arrow plotlines aren’t being kept under lock and key so much — see: actor Rick Gonzalez basically laying out Wild Dog’s betrayal ahead of the midseason finale — and it seems like Roy will probably be back on Arrow at some point in 2018.