 However, he returned to Leicester City on 17 November 2015 after making only five appearances for the club.On 1 June 2018, Huddersfield Town announced the signing of Hamer on a free transfer once his contract ended on 1 July.On 8 August 2019, Hamer joined Derby County on loan for the 2019–20 season as back up for Kelle Roos.