"If Simon cannot give something 100 per cent it plays on his mind but I know he will always be a fanatical Scunthorpe United supporter," he told the club's official website.
"We very much appreciate his contribution to the success of our club whilst he has been a director and in deed for the many years of sponsorship, in its various forms, before he joined the board.
"We will always be grateful for his valuable contribution to the well being and running of our club."