Horgan had some initial success when signed under Grayson but was frozen out for long periods last season with Barkhuizen, Robinson and Bodin all ahead of him to play out wide.
Reports suggest that Hibernian are set to make a move for the Irish international. The pacey winger still has a lot to offer and despite his size can still craete havoc down the wing. His departure would free up another space on the wage bill.