On 10 August 2006, Kuszczak joined Manchester United in a deal involving the transfers of England Under-18 goalkeeper Luke Steele and defender Paul McShane to West Brom.
Den 10. august 2006 flyttede Kuszczak til Manchester United på en aftale der involverede Englands u-18-målmand Luke Steele og forsvarsspilleren Paul McShane til West Brom.