MANCHESTER (AFP) - Amir Khan insists he is fully focused on his world title defence against Paul McCloskey on Saturday despite a turbulent build-up dogged by a wrangle over television money. The World Boxing Association (WBA) light-welterweight champion could end up walking away with less money from a fourth defence than his challenger after a change in UK broadcasters that will show the fight. The fight at the MEN Arena in Manchester will now be screened by the pay-per-view channel Primetime after the more established Sky Box Office dropped the event last week. It has been reported the change in broadcasters will cost Khan over 1 million pounds, while Northern Ireland boxer McCloskey's fee has not been reduced by the TV row. Khan, 24, maintains he is unconcerned by the huge reduction in the size of his purse and is confident he will come through McCloskey to set up a world title unification fight against American Timothy Bradley, who holds the World Boxing Council and World Boxing Organisation titles.