Done deal · 2026

Borna Sosa joins 1. FC Köln on loan

Crystal Palace → 1. FC Köln · Loan · Value €3m · Confirmed

Confirmed 1 Sept 2026

Borna Sosa, a defender, has joined 1. FC Köln on loan from Crystal Palace, confirmed 1 Sept 2026. The deal is now settled in Transfer Tracker's Done Deals record.

Who broke it: Florian Plettenberg, 1 Sept 2026, on completion day.

How the deal happened

• Interest · 1 Sept 2026 · Florian Plettenberg
• Talks · 1 Sept 2026 · Florian Plettenberg
• Agreed · not reported
• Here we go · not reported
• Signed · 1 Sept 2026 · Florian Plettenberg

More business at 1. FC Köln and Crystal Palace

• Ben Chilwell: Strasbourg → Crystal Palace · Free · 1 Sept 2026
• Darío Osorio: FC Midtjylland → Crystal Palace · Loan + obligation (€26m), loan fee €2m · 1 Sept 2026
• Justin Devenny: Crystal Palace → Stoke City · €6m · 1 Sept 2026
• Quinten Timber: Olympique Marseille → Crystal Palace · €20m · 1 Sept 2026
• Daniel Muñoz: Crystal Palace → Nottingham Forest · €26m · 31 Aug 2026
• Axel Disasi: Chelsea → Crystal Palace · Loan + obligation · 26 Aug 2026
• Ellyes Skhiri: Eintracht Frankfurt → 1. FC Köln · €1m · 20 Aug 2026
• Zavier Gozo: RSL → Crystal Palace · €13m · 18 Aug 2026

• Borna Sosa profile, value & stats
• 1. FC Köln transfers & squad
• Crystal Palace transfers & squad
• Done Deals · every completed transfer & spend tracker

See the full completed-deal record and more business at both clubs. Open on transfertracker.ai