Sporting is interested in signing 19-year-old Luís Guilherme and has initiated first contacts with West Ham to advance negotiations. The player is a priority target for the Portuguese club in the January winter market due to his versatility, as he can play on both wings and centrally. West Ham had acquired the attacker from Palmeiras for €23 million in the 2024/25 season, and he holds a contract with the English club until June 2029. Porto was also reportedly interested in him during the previous transfer window.