 He also scored against Cardiff on 6 March and against Ipswich Town on 6 April, but both goals were controversially ruled offside and did not stand.Manager Nigel Clough stated his intent to sign Martin on a permanent basis in the summer, with a deal reported to being close in early May.On 9 May 2013, it was confirmed that Martin would join Derby County on a free transfer, signing a two-year contract with the possibility of a third year, with the transfer formally taking place on 1 July 2013.