Complex sentence: It was announced in April 2006 that Hughes would be returning to "GH" in May 2006 as part of a May Sweeps period, in which three "GH" veterans would return.
Split into simpler sentences: It was announced in April of 2006 that Hughes would be returning to "GH". In May 2006 as part of the May Sweeps period, three "GH" veterans would return.