The case involves a dispute between Slovak football club MSK Zilina and Bosnian player Velimir Vidic over the termination of his employment contract, adjudicated by the Court of Arbitration for Sport (CAS). The contract, signed in February 2008, was set to run until June 2010 and included financial terms and references to FIFA, UEFA, and Slovak Football Association (SFA) regulations. An annex to the contract, "Annex 3," stipulated disputes would be resolved by the SFA's Arbitration Court under Slovak law, but the CAS panel found it invalid due to lack of mutual consent and clarity, particularly as it was in Slovak, a language Vidic did not understand. The dispute arose when Zilina terminated the contract, citing poor performance and a police complaint against Vidic for property damage. Vidic argued he was forced to leave, banned from training, and evicted from his apartment, while Zilina claimed he left voluntarily. The CAS ruled Zilina's actions—excluding Vidic from training, withholding salary, and failing to communicate clearly—constituted a breach of contract without just cause under FIFA's Regulations on the Status and Transfer of Players (RSTP). The panel emphasized poor performance alone does not justify termination and dismissed Zilina's reliance on pending police investigations. The applicable law was determined to be the RSTP and Swiss law, as the contract lacked a valid governing law clause. The CAS upheld the FIFA Dispute Resolution Chamber's (DRC) initial ruling, which awarded Vidic compensation, but increased the amount to EUR 105,000 to account for lost earnings and damages. The panel dismissed Zilina's appeal, affirming the DRC's jurisdiction and rejecting their claim that the SFA should have handled the dispute. The case underscores the importance of clear contractual terms, mutual consent for amendments, and just cause for termination in football employment disputes. It also highlights the consequences of unilateral contract breaches and the role of CAS in resolving such conflicts under international sports law. The final ruling required Zilina to pay Vidic EUR 105,000, settling all claims and barring further litigation on the matter.