Mathis Lambourde has transferred to Servette from Hellas Verona, signing a contract with the club until the summer of 2030. In the transfer announcement, Servette stated its awareness of Lambourde's conviction for negligent homicide in 2024. The club also stated it analyzed the situation before signing him and concluded that he deserves the opportunity to continue his career in a structured environment.

According to Tuttomercato, Hellas Verona FC has permanently sold forward Mathis Lambourde to Servette Football Club Genève 1890. Hellas Verona FC retains a percentage of the player's future resale.

Mathis Lambourde, who has returned from a loan spell at Reggiana, is expected to depart from Hellas Verona despite having a contract with the club until 2029. The Swiss club Servette is nearing an agreement with Verona for the French forward, who was born in 2006. The agreement is based on a 2.5 million euro fee and also includes a percentage of any future resale for Hellas Verona, which has not yet been defined. In the 2025/2026 Serie B season, he made 24 appearances, scoring 4 goals and providing 1 assist. Lambourde has 5 caps for the France U18 team. According to Transfermarkt, his current market value is €800k.