During his time at Besiktas, Oxlade-Chamberlain made 50 appearances, scoring five goals. His team, managed by Ole Gunnar Solskjaer, a former Manchester United boss, achieved sixth- and fourth-place finishes in two consecutive seasons.
The club has confirmed that it paid Oxlade-Chamberlain €1.75 million to terminate his contract, which was set to expire in 2026.
Rumors suggest that Birmingham City, a team in the English Championship, is interested in signing the former England international to return to his home country.