Tunisia's Club Africain has been issued with a transfer ban by Fifa after failing to pay former player Nicholas Opoku.
The Ghanaian, currently on loan at French Ligue 2 side Amiens from Italy's Udinese, joined the 13-time Tunisian champions in August 2017 and terminated his contract in June 2018 after a repeated failure to be paid.
"Fifa can confirm that a ban from registering new players internationally has been imposed on Club Africain in relation to this matter," a Fifa spokesperson told BBC Sport Africa.
"The ban will come into force at the beginning of the next registration period."
Club Africain will be able to register players again if they settle their dues with Opoku, who has enjoyed a fine season in France.
In its findings, Cas ruled that the former African champions had failed to pay Opoku's salary on time, had imposed a 'disproportionate fine' on the player while also not replying to any of his requests for payment.
Even though Opoku terminated his contract on 1 June 2018, Club Africain sold the player to Italy's Udinese for US$960,000 on 25 June 2018.