 In 2012 he transferred to Coventry City, remaining there until 2016 when he joined Sheffield United, helping the club achieve two promotions in three years, moving up from League One to the Premier League.Fleck was born in Glasgow and was brought up in the city's Yoker district; he was educated at Knightswood Secondary School.His uncle, former Scotland international Robert Fleck, played for Rangers, Chelsea and Norwich in the 1980s and 1990s.