Disagreements over training allowances sometimes lead to litigation over the payment Fiorentina signed to Matthias Lepiller in 2006, but an appeal to the Court of Arbitration for Sport (CAS) was dismissed in 2011, five years after Lepiller left the club. The clubs have also agreed on a specific transfer contract in order to reduce the actual costs of signing the contract. For example, Attila Filkor joined a Maltese association as a free agent and immediately sold to Inter Milan. Since the timing of tariffs was different between the Maltese league and the Italian league, savings were made until Filkor`s parent association filed a lawsuit with FIFA. The vast majority of transfer contracts contain confidentiality clauses, which is one of the reasons why media coverage of transfer fees can vary greatly. .