| Club: | FC Sion |
| Season: | 2023–24 |
| Manager: | Didier Tholot |
| Stadium: | Stade de Tourbillon |
| League: | Swiss Challenge League |
| League Result: | 1st (promoted) |
| Cup1: | Swiss Cup |
| Cup1 Result: | Semi-finals |
| League Topscorer: | Dejan Sorgić (16) |
| Season Topscorer: | Dejan Sorgić (20) |
| Prevseason: | 2022–23 |
| Nextseason: | 2024–25 |
The 2023–24 season was the club's first season since 2006 in the second tier of Swiss football and its 115th year of existence.
| Player | Transferred from | Fee | Date | Source | ||
|---|---|---|---|---|---|---|
| Luzern | Free | |||||
| Yverdon-Sport | Undisclosed | |||||
| Basel | Free | |||||
| Bellinzona | Free | |||||
| CSKA 1948 | €700,000 | |||||
| Aarau | Undisclosed | |||||
| Juventus Next Gen | Loan |
| Player | Transferred to | Fee | Date | Source | ||
|---|---|---|---|---|---|---|
| Parma | Loan return | |||||
| Winterthur | Free | |||||
| Locarno | Undisclosed | |||||
| Kryvbas Kryvyi Rih | Loan | |||||
| Schaffhausen | Loan |
The matches were unveiled on 21 June 2023.[1]
See main article: 2023–24 Swiss Cup.