Guilherme Smith, a 23-year-old Brazilian winger, has extended his contract with Union SG until 2030. He joined in August 2025 and received a new agreement after his performance in the past season, during which he contributed a combined four goals and two assists in 22 appearances in the Jupiler Pro League and its Champions' Play-Offs. His current market value is €4.00m, according to Transfermarkt.