Since ancient times, football has been one of the most famous and popular sports in the world. With the progress of humanity comes the development of football. Football players around the world enjoy great attention and affection from fans. Most of them start their football journey from a young age in a football school. The development of the age categorization system led to the formation of football categories. Football players are getting better and better, and clubs are getting bigger and bigger. Most of the money in the football world comes from transfers and is the main source of income for most clubs. Through growing up, the status of football players changes, which means that the type of contract they sign also changes. The contract with the club is the basis for any career. The contract aims to satisfy both parties, the football player and the club. Through this paper, we will investigate what categories football players pass through the years, we will investigate what types of contracts can be signed. It will be studied in detail how the contract affects the football club and how it affects the football player. The main question of the work that will be investigated is whether the contract affects the freedom of movement of the players and how?