ARROW NEWS: Synopsis for S03E11 "Midnight City"
It would seem that, as I said in a previous post "Arsenal and Black Canary team-up: Do you remember this set photo?... With Oliver disappearing and Roy still in the vigilante/hero game I wouldn't be surprised if the dynamic shifted in the wake of Oliver's disappearance. Roy is relatively versed in being a vigilante...and I'm sure he and Laurel could team up and do some good...as we know they will be doing."
This also confirms Oliver will NOT be back in Starling by S03E11...however I do have some thoughts on that can be read here.