AC Milan risk a ban from European football after Botafogo filed complaints to UEFA and FIFA over unpaid transfer payments.
The allegations relate to the transfer of Sergio Luiz Ceregatti, with Milan apparently owing £254,000 in overdue training compensation, says the Daily Mail.
Training compensation is a FIFA-recognised means of recompensing clubs that developed a player between his 12th and 21st birthdays and is a standard payment in many transfers.
Uefa's Club Licensing and Financial Fair Play regulations state that clubs seeking a licence to play in the Champions League or Europa League must have 'no overdue payables that refer to transfer activities that occurred prior to the previous 31 December.'
Botafogo claim that Ceregatti spent four years in their academy between those ages before joining Milan, seven-time winners of the European Cup.
Milan contest that the compensation should be restricted to the £52,205 they paid in May 2011 following an earlier challenge by the Brazilian club.