On 27 December 2008, Northampton terminated Henderson's contract with immediate effect after Henderson did not start a game for the Cobblers during the 2008–09 season and he had failed to score in 33 first-team appearances.
ˌɔn twˈɛnti sˈɛvən dᵻsˈɛmbɚ tˈuː θˈaʊzənd ˈeɪt, nɔːɹθˈæmptən tˈɜːmᵻnˌeɪɾᵻd hˈɛndɚsənz kˈɑːntɹækt wɪð ɪmˈiːdɪət ɪfˈɛkt ˈæftɚ hˈɛndɚsən dɪdnˌɑːt stˈɑːɹt ɐ ɡˈeɪm fɚðə kˈɑːblɚz dˈʊɹɹɪŋ ðə tˈuː θˈaʊzənd ˈeɪt zˈiəɹoʊ nˈaɪn sˈiːzən ænd hiː hæd fˈeɪld tə skˈoːɹ ɪn θˈɜːɾi θɹˈiː fˈɜːsttˈiːm ɐpˈɪɹənsᵻz.