The idea of a football transfer first came in England after the Football Association (FA) introduced player registration in 1885. The Football League was formed in 1888. There are some restrictions in the Football League Club.
In 1912, Charles Sutcliffe established the legality of the retain-and-transfer system when he successfully formed the club Aston Villa during the Kingaby case in England. A player can play one or more games for any football club. In each season, the player had to register with a club even if he is in that club before. If a player is not registered he is not allowed to play.
And if the player is registered with a club, then he will not be allowed to be play for another club during the similar season without the permission of the FA.