CAS Case Digest · Verified against the full award text

CAS 2026/A/12115 — Atlético Mineiro S.A.F. v. Southampton Football Club Limited & FIFA

"Atlético Mineiro v Southampton" · CAS upheld Mineiro's EUR 1,125,000 transfer-fee debt but shifted interest start date from 2 July to 22 August 2025.

What happened in Atlético Mineiro v Southampton

This case arose from the permanent transfer of player Lyanco from Southampton to Atlético Mineiro under a Transfer Agreement dated 4 July 2024, with a total transfer fee of EUR 5,000,000 payable in five instalments. Mineiro paid the first two instalments but refused to pay the third instalment of EUR 1,125,000 due on 1 July 2025, arguing that Southampton had failed to issue a valid, individualised invoice for that instalment as a condition precedent under Clause 2.1 of the Transfer Agreement. Southampton filed a claim before the FIFA Players Status Chamber (PSC), which on 18 November 2025 ordered Mineiro to pay EUR 1,125,000 plus interest at 9.25% p.a. from 2 July 2025 to 6 August 2025 and 9% p.a. thereafter, imposed a reprimand, and threatened a transfer ban. Mineiro appealed to CAS. The Sole Arbitrator upheld the debt and the reprimand but partially upheld the appeal on one narrow point: interest was held to accrue only from 22 August 2025 (three days after the contractual Warning Notice), not from 2 July 2025, because Clause 2.7 of the Transfer Agreement required a written notice and a three-day cure period before interest could run. The case matters because it clarifies how contractual notice-and-cure clauses interact with the default date for interest under Swiss law, and confirms that a single omnibus invoice covering all instalments can constitute a 'valid invoice' for subsequent payment obligations.

Procedural history of CAS 2026/A/12115

On 4 July 2024, Southampton and Mineiro concluded a Transfer Agreement for the permanent transfer of Lyanco. Mineiro paid the first instalment on 18 July 2024 and the second on 16 January 2025 but failed to pay the third instalment of EUR 1,125,000 due on 1 July 2025. After repeated demands, Southampton filed a claim before the FIFA Players Status Chamber (FIFA PSC) on 3 October 2025. Mineiro disputed the claim on 3 November 2025. On 18 November 2025, the FIFA PSC rendered the Appealed Decision ordering Mineiro to pay EUR 1,125,000 plus interest at 9.25% p.a. from 2 July 2025 to 6 August 2025 and 9% p.a. thereafter, imposing a reprimand, and providing for a transfer ban if full payment was not made within 45 days. The grounds were notified on 22 December 2025. Mineiro filed a Statement of Appeal with CAS on 12 January 2026 and its Appeal Brief on 11 February 2026. The case was decided on written submissions without a hearing.

Key holdings in CAS 2026/A/12115

• A single omnibus invoice issued on 5 July 2024 covering all five instalments constitutes a 'valid invoice' under Clause 2.1 of the Transfer Agreement for the third instalment, as the Transfer Agreement does not require separate invoices for each instalment.
• Mineiro's prior payment of the first and second instalments without objection to the invoice, applying the venire contra factum proprium doctrine, precludes it from later contesting the invoice's validity for the third instalment.
• Under Clause 2.7 of the Transfer Agreement, interest accrues only from 22 August 2025 — three days after the Warning Notice of 18 August 2025 — not from 2 July 2025, because the parties contractually required a written notice and a three-day cure period before interest could run.
• The applicable interest rate under Clause 2.7 is 9% per annum (5% above the Barclays Bank base rate of 4%), as alternative (b) unambiguously refers to 5% per annum above the base rate, not the base rate alone.
• All prerequisites of Article 12bis of the FIFA RSTP were satisfied — a due payment from a transfer agreement was delayed more than 30 days without a prima facie contractual basis, and Southampton issued a written default notice granting at least 10 days to comply — warranting a reprimand as Mineiro's second offence within two years.

How the CAS panel reasoned

The Sole Arbitrator first addressed whether the Invoice was valid. He found that Clause 2.1 refers to 'a valid invoice' in singular terms, that no provision required separate invoices per instalment, and that Mineiro's payment of the first and second instalments without objection demonstrated acceptance of the invoice. He rejected the 'commercial practice' argument as unsupported by evidence. On interest, he accepted that Article 102(2) SCO would normally place Mineiro in default from 2 July 2025, but held that Clause 2.7 constituted a contractual deviation requiring a written warning notice and a three-day cure period before interest could accrue, making 22 August 2025 the correct dies a quo. He found Southampton's delay in issuing the Warning Notice was not prejudicial to Mineiro. On the interest rate, he rejected the contra proferentem argument and held that the plain wording of Clause 2.7(b) — '5% per annum above the base rate' — unambiguously produced a cumulative rate of 9%. He cited CAS 2010/A/2128, where 17% was upheld as not violating Swiss public policy, to confirm 9% was not disproportionate. On the reprimand, applying the de novo review standard from CAS 2022/A/8695, he found no basis to disturb the FIFA PSC's discretion, noting Mineiro had not contested proportionality and this was its second offence.

Why Atlético Mineiro v Southampton matters in CAS jurisprudence

The award clarifies that a single omnibus invoice covering a multi-instalment transfer fee satisfies a 'valid invoice' condition precedent for all subsequent instalments, and that prior payment without objection triggers venire contra factum proprium. Critically, it establishes that contractual notice-and-cure clauses in transfer agreements displace the Swiss law default date under Article 102(2) SCO for interest accrual purposes, a point of practical importance for clubs drafting payment terms in international transfer agreements.

Cases cited in this award

CAS 2010/A/2128 CAS 2018/A/5683 CAS 2016/A/4705 CAS 2009/A/1870 CAS 2022/A/8695 CAS 2011/A/2518

Frequently asked questions about Atlético Mineiro v Southampton

Did Atlético Mineiro have to pay the EUR 1,125,000 third instalment to Southampton?

Yes. The Sole Arbitrator confirmed that Mineiro had overdue payables of EUR 1,125,000 towards Southampton. Mineiro's argument that no valid invoice had been issued for the third instalment was rejected because the single omnibus invoice of 5 July 2024 covered all five instalments and Mineiro had already used it to pay the first and second instalments without objection.

When did interest start running on the unpaid transfer instalment in the Atlético Mineiro v Southampton case?

Interest ran from 22 August 2025, not from 2 July 2025 as the FIFA PSC had held. The Sole Arbitrator found that Clause 2.7 of the Transfer Agreement required Southampton to issue a written Warning Notice and then allow Mineiro three additional calendar days to pay before interest could accrue. Southampton issued the Warning Notice on 18 August 2025, making 22 August 2025 the correct dies a quo.

What interest rate applied to Mineiro's overdue transfer payment to Southampton?

The applicable rate was 9% per annum, calculated as 5% above the Barclays Bank base rate of 4% under Clause 2.7(b) of the Transfer Agreement. The Sole Arbitrator rejected Mineiro's contra proferentem argument and its reading that the rate should be the greater of 5% or the base rate alone, finding the wording unambiguous. He also confirmed 9% was not disproportionate, citing CAS 2010/A/2128 where 17% was upheld.

Was Atlético Mineiro sanctioned under Article 12bis FIFA RSTP for the unpaid Southampton transfer fee?

Yes. The Sole Arbitrator confirmed that all prerequisites of Article 12bis were met: the Third Instalment of EUR 1,125,000 from a transfer agreement was delayed more than 30 days without a prima facie contractual basis, and Southampton issued a written Default Notice on 22 September 2025 granting a 10-day cure period. A reprimand was imposed, noted as Mineiro's second offence within two years, with a transfer ban applicable if full payment was not made within 45 days of the FIFA PSC decision.

Topics: Transfers, agents, TPO & sell-on clauses at CAS

Source: official award. This digest was generated by LexXi from the full award text and machine-verified against it — every figure, article and citation above appears in the source. It is an editorial summary, not legal advice. See how ElevenLex verification works.