"This is an excellent appointment for us and a fantastic addition to the coaching set up. Johnny has played at the highest level and coached at the highest level and his knowledge of the game is second to none," Clough told the official Rams website.
"He also possesses an infectious enthusiasm for the game which will benefit many areas of our football club.
"Johnny won't have a specific role. I want to use his talents in a number of areas.
"He will assist with coaching the first team, the academy and also get involved with the scouting process.
"I believe we now have a first class coaching set up throughout the club as we prepare for the new season."