 On 8 April 2014, Sina announced that he will retired at the end of 2013–14 season at the age of 35.In the last match of the season against Besa Kavajë, Sina was set to play the last match of his career, but this did not happen because Besa Kavajë didn't appear to play, forcing FSHF to award Tirana with a 3–0 victory.However, for Sina, a farewell ceremony was held to celebrate his career, which was organised by Tirana.