Brian Howard Clough was an English football player and manager, primarily known for his successes as a manager with Derby County and Nottingham Forest. He is one of four managers to have won the English league with two different clubs. He is widely considered to be one of the greatest managers of all time. Charismatic, outspoken and often controversial, his achievements with Derby and Forest, two clubs with little prior history of success, are rated among the greatest in football history. His teams were also noted for playing attractive football and for their good sportsmanship. Despite applying several times and being a popular choice for the job, he was never appointed England manager and has been dubbed the "greatest manager England never had".

Derby County Football Club is a professional association football club in Derby, England. The team competes in EFL League One, the third level of the English football league system, but will play in EFL Championship in the 2024–25 season after gaining promotion.