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The club borrowed the forward Obafemi Martins representing Kazan's "Rubin" until the end of this season.
The strategist of the Russian team, Kurban Berdiyev, said: "Obafemi had a child, so he asked to be released because he wants to be closer to his family."
Obafemi, who previously played for Milan Inter, Wolfsburg, and Newcastle teams, as well as the Nigerian national team, moved to Kazan after last year's World Cup, but failed to shine.
In the national championships, he played 12 matches and scored two goals.