Overview
- Both clubs confirmed the deal, with Sparta Prague unveiling the 25-year-old right back in an official presentation after his arrival in Prague.
- Burnley stated the loan runs until the end of the 2025/26 season, and multiple reports say there is no purchase option, though one outlet published a conflicting June 2027 end date.
- Sonne links up with compatriot Joao Grimaldo at Sparta, which is competing in the Czech league and the UEFA Europa Conference League.
- Sporting director Tomáš Rosický praised Sonne’s intensity, dynamism and defensive discipline, saying his experience in English football fits Sparta’s demands.
- Local reports suggest Sonne could debut quickly, with a potential first appearance as soon as this weekend’s league match against Dukla Prague.