Mamadou Sarr has been transferred from Strasbourg to Chelsea for 12 million euros, with an immediate return on loan to Strasbourg. This transaction is one of nine between the two clubs, both under the control of the BlueCo consortium. The transfer has led to discussions regarding Strasbourg's independence, with fans voicing concerns about the club's growing reliance on Chelsea. The deal has also attracted the attention of football authorities, including UEFA and the Premier League, who are closely observing these transactions to ensure they adhere to financial fair play regulations.