Nasri, who won two Premier League titles and a League Cup with City during his five-year stay at the Etihad, had most recently been playing in Belgium with former team-mate Vincent Kompany’s Anderlecht side.
The former France international had previously had spells with Sevilla on loan, then Antalyaspor and West Ham after his departure from City, but left the Belgian side when the coronavirus pandemic brought football in the country to a halt in 2020.
In 2018 Nasri was handed an 18-month ban from UEFA after receiving an intravenous treatment at a Los Angeles clinic two years earlier in breach of World Anti-Doping Agency rules.
French media revealed that the ban had played a part in his decision to retire as it had disrupted his career.
