How it unfolded
Bosman had played for two years at RFC Liege when his contract was about to expire in the summer of 1990. The club sent the midfielder a new offer, which reduced his salary to 25 percent of his previous income. Bosman refused to sign a new contract and was put on the transfer list with a fee of approximately 500,000 euro.
No club showed interest until Bosman approached Dunkerque. The French club came to an agreement with Liege, however the Belgian club had doubts about Dunkerque’s solvency and withheld the necessary transfer certificate.
Liege suspended Bosman for the entire season. The Belgian transfer rules applicable at that time, allowed a club to suspend a player when both parties could not agree on a new contract.
Eight days later, Bosman started his legal case against Liege and the Belgian Football Association for preventing him from joining other clubs. One year later, he also added UEFA to the proceedings as the responsible party for drafting the transfer system rules. According to Bosman the transfer rules and nationality clauses should not be applicable to him, referring to European Labour Law.
In December 1991, the French and Dutch player unions (UNFP and VVCS respectively) voluntarily joined the proceedings.