Birmingham-born Roberts missed the entire 2018/19 campaign after breaking his leg during the Saddlers' pre-season friendly against Stoke City at Banks's Stadium and has been working closely with the club's Head Physio Marc Czuczman in a bid to return.
In March it was revealed that Kory, who still has a metal plate in his knee, had started running again with his recovery progressing as planned, even going as far as passing the ball around with fellow injury-sufferer Maz Kouhyar.
But while Clarke is hoping Kory will be ready to join in with the group when they report to Essington on Monday, 24th June, the gaffer is also wary of putting too much pressure on the youngster, insisting that he will not put a timescale on his return.
Speaking via the Express & Star, Darrell said; "We are hoping that Kory can go straight back into pre-season training when the lads come back at the end of June.
"He has still got to have his plate out but we are hoping that he will be able to do a fair amount of work in pre-season.
"I don’t like putting timescales on things like that. But we will see how things go and we will link in with the physio at every opportunity to see if we can get him back with the group as quickly as possible."