Johnson wants Derby deal

He said: “The knee does not feel right – it just gave in and we will have to wait for a couple of days before it can be assessed.

“I do not know what will happen now because the manager and I said we would sit down after the play-off final to discuss my future.

“But will the club want to offer a contract to someone who has a knee injury?

“I have not played as much as I would have liked this season, but to be fair to the gaffer, he told me if I did well in the final game of the normal season against Leeds then I would be in for the play-off games and he has been true to his word.”