The Gold Coast Titans say forward Ashley Harrison will miss State of Origin III with a broken toe.

Harrison was expected to be named by Queensland in their extended squad on Tuesday but scans have revealed a fracture in his big toe.

Brisbane lock Corey Parker is now expected to make his Origin starting debut against the Blues in Wednesday week’s series decider at Suncorp Stadium.

Queensland selectors will name their squad on Tuesday afternoon with Melbourne fullback Billy Slater the biggest injury concern.