€17m Permanent Deal with Add-Ons and Sell-On Clause Confirmed.

Luis Guilherme

Sporting CP have secured the permanent signing of Brazilian teenager Luis Guilherme from West Ham United, with Fabrizio Romano issuing the famous “Here We Go!” confirmation on January 2, 2026.

The deal – a straight permanent transfer – carries a total package worth up to €17m, including add-ons. West Ham will also benefit from a sell-on clause, protecting future value on the highly-rated talent.

Luis Guilherme, 18, joined West Ham from Palmeiras in summer 2024 for ~€30m + add-ons but struggled for consistent minutes under Julen Lopetegui and later Graham Potter, making just a handful of Premier League starts amid adaptation challenges.

The versatile attacking midfielder/winger – capped at Brazil U20 level – returns to a familiar Portuguese environment (Sporting’s Brazilian pipeline strong) under Rúben Amorim, who sees him as a long-term gem.

Documents are currently being checked, with medical and official announcement expected soon. A smart piece of business for Sporting – high upside at a reduced fee.