Answer the following question: Information:  - Bulgarian Footballer of the Year ("Futbolist 1 na Balgariya") is an annual title awarded to the best Bulgarian association football player of the year. The award has been given since 1961, and the winner is elected by authorized journalists from the leading Bulgarian media.  - Association football, more commonly known as football or soccer, is a team sport played between two teams of eleven players with a spherical ball. It is played by 250 million players in over 200 countries and dependencies, making it the world's most popular sport. The game is played on a rectangular field with a goal at each end. The object of the game is to score by getting the ball into the opposing goal.  - Georgi Spirov Naydenov ( Bulgarian :    ) ( 21 December 1931 -- 28 May 1970 ) is a former Bulgarian football goalkeeper and former manager . He is considered the greatest Bulgarian goalkeeper for all time . Between 1955 and 1965 he played in 176 matches for CSKA Sofia . He was honoured as Bulgarian Footballer of the Year in 1961 . Naydenov won the top Bulgarian league , the A PFG , a 8 times ( all with CSKA ) , as well as the Bulgarian Cup , 3 times ( all with CSKA ) . He was respected for his incredible work ethic and his determination during training and matches alike .    What is the relationship between 'georgi naydenov ' and 'association football player'?
Answer:
occupation