Hartson, though, is not thought tobe a serious candidate to take over at the Liberty Stadium but the former Arsenal, West Ham and Coventry forward is a real contender to replace Hughes at Falkirk.
The Ospreys - who have lost just once at the Liberty Stadium since last November - will be looking to bounce back from their first defeat of the season.
But Martinez laughed at the suggestion that Benitez might be persuaded to send Liverpool captain and star England midfielder Steven Gerrard to the Liberty Stadium as well.