FC Luzern have signed 22-year-old Swiss centre-back Loïc Lüthi from FC Winterthur on a contract until the summer of 2029. The club announced the transfer in a statement, where sporting director Remo Meyer described Lüthi as a robust, two-footed defender with natural leadership qualities who will help the team with his strength in duels. Lüthi progressed through the youth system at FC Winterthur and, after loan spells at Seuzach and SC Kriens, returned to the club in 2023, making a total of 53 competitive appearances. At FC Luzern, he will wear the number 21 shirt. The defender has a current market value of €600k, according to Transfermarkt, and made 51 appearances and scored 3 goals in the 2025/2026 Super League season.