Debuchy remains on Toon's radar for January.
He told the Evening Chronicle: "It is always a 'possibly' because you are never able to negotiate what the actual figure will be.
"We had that problem with Debuchy. The figure that was told to us was way off the figure the club wanted. We were indicated that something was out of keel and that's why we felt bad about the deal.
"Then there are the personal terms of what the player could 'possibly have'."