_Everton on the wrong end of another rout as Austin's double heaps misery on Unsworth . _Southampton 4-1 Everton: Charlie Austin nets a quickfire double to snub Gylfi Sigurdsson's bizarre equaliser and condemn Toffees to more heartbreak. _David Unsworth's Everton were dealt yet another heavy blow as they fell to their seventh defeat of the season. _Dusan Tadic gave Southampton the lead before Gylfi Sigurdsson fired in the equaliser from distance. _Austin's six-minute brace secured the win before Steven Davis added a fourth shortly before full time. _Goalscorer Austin started his first game of the season and hadn't scored from open play in over a year. _Everton stated Ronald Koeman's replacement is 'imminent', with the club two points above the drop zone.